Home / 90,837,670.20-136,287,998.10-39,756,348.60

Finding the Fourth Proportional to 90,837,670.20, 136,287,998.10 and 39,756,348.60

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Solution

The fourth proportional to 90,837,670.20, 136,287,998.10 and 39,756,348.60 is: 59,648,306.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,837,670.20 : 136,287,998.10 = 39,756,348.60 : x
  2. Step 2: Convert to fraction form
    90,837,670.20/136,287,998.10 = 39,756,348.60/x
  3. Step 3: Cross multiply
    90,837,670.20x = 136,287,998.10 × 39,756,348.60
  4. Step 4: Simplify right side
    90,837,670.20x = 5,418,313,162,459,738
  5. Step 5: Solve for x
    x = 5,418,313,162,459,738/90,837,670.20
  6. Step 6: Final answer
    x = 59,648,306.15

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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.