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Finding the Fourth Proportional to 70,139.61, 96,792.66 and 38,308.59

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Solution

The fourth proportional to 70,139.61, 96,792.66 and 38,308.59 is: 52,865.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,139.61 : 96,792.66 = 38,308.59 : x
  2. Step 2: Convert to fraction form
    70,139.61/96,792.66 = 38,308.59/x
  3. Step 3: Cross multiply
    70,139.61x = 96,792.66 × 38,308.59
  4. Step 4: Simplify right side
    70,139.61x = 3,707,989,842.99
  5. Step 5: Solve for x
    x = 3,707,989,842.99/70,139.61
  6. Step 6: Final answer
    x = 52,865.85

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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.