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Finding the Fourth Proportional to 70,785.87, 97,681.55 and 38,952.73

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Solution

The fourth proportional to 70,785.87, 97,681.55 and 38,952.73 is: 53,753.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,785.87 : 97,681.55 = 38,952.73 : x
  2. Step 2: Convert to fraction form
    70,785.87/97,681.55 = 38,952.73/x
  3. Step 3: Cross multiply
    70,785.87x = 97,681.55 × 38,952.73
  4. Step 4: Simplify right side
    70,785.87x = 3,804,962,970.47
  5. Step 5: Solve for x
    x = 3,804,962,970.47/70,785.87
  6. Step 6: Final answer
    x = 53,753.15

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1.5x scale

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.