Home / 90,724,010.40-136,086,015.60-30,139,736.40

Finding the Fourth Proportional to 90,724,010.40, 136,086,015.60 and 30,139,736.40

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Solution

The fourth proportional to 90,724,010.40, 136,086,015.60 and 30,139,736.40 is: 45,209,604.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,724,010.40 : 136,086,015.60 = 30,139,736.40 : x
  2. Step 2: Convert to fraction form
    90,724,010.40/136,086,015.60 = 30,139,736.40/x
  3. Step 3: Cross multiply
    90,724,010.40x = 136,086,015.60 × 30,139,736.40
  4. Step 4: Simplify right side
    90,724,010.40x = 4,101,596,637,910,287.50
  5. Step 5: Solve for x
    x = 4,101,596,637,910,287.50/90,724,010.40
  6. Step 6: Final answer
    x = 45,209,604.60

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.