Home / 65,565,317.10-90,491,981.31-39,105,366.78

Finding the Fourth Proportional to 65,565,317.10, 90,491,981.31 and 39,105,366.78

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Solution

The fourth proportional to 65,565,317.10, 90,491,981.31 and 39,105,366.78 is: 53,972,470.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,565,317.10 : 90,491,981.31 = 39,105,366.78 : x
  2. Step 2: Convert to fraction form
    65,565,317.10/90,491,981.31 = 39,105,366.78/x
  3. Step 3: Cross multiply
    65,565,317.10x = 90,491,981.31 × 39,105,366.78
  4. Step 4: Simplify right side
    65,565,317.10x = 3,538,722,119,776,455
  5. Step 5: Solve for x
    x = 3,538,722,119,776,455/65,565,317.10
  6. Step 6: Final answer
    x = 53,972,470.15

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.