Home / 90,623,845.60-135,935,768.40-30,039,571.60

Finding the Fourth Proportional to 90,623,845.60, 135,935,768.40 and 30,039,571.60

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Solution

The fourth proportional to 90,623,845.60, 135,935,768.40 and 30,039,571.60 is: 45,059,357.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,623,845.60 : 135,935,768.40 = 30,039,571.60 : x
  2. Step 2: Convert to fraction form
    90,623,845.60/135,935,768.40 = 30,039,571.60/x
  3. Step 3: Cross multiply
    90,623,845.60x = 135,935,768.40 × 30,039,571.60
  4. Step 4: Simplify right side
    90,623,845.60x = 4,083,452,247,852,818
  5. Step 5: Solve for x
    x = 4,083,452,247,852,818/90,623,845.60
  6. Step 6: Final answer
    x = 45,059,357.40

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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.