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Finding the Fourth Proportional to 70,772.68, 97,663.86 and 38,938.60

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Solution

The fourth proportional to 70,772.68, 97,663.86 and 38,938.60 is: 53,733.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,772.68 : 97,663.86 = 38,938.60 : x
  2. Step 2: Convert to fraction form
    70,772.68/97,663.86 = 38,938.60/x
  3. Step 3: Cross multiply
    70,772.68x = 97,663.86 × 38,938.60
  4. Step 4: Simplify right side
    70,772.68x = 3,802,893,979.00
  5. Step 5: Solve for x
    x = 3,802,893,979.00/70,772.68
  6. Step 6: Final answer
    x = 53,733.93

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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.