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Finding the Fourth Proportional to 70,951.69, 97,912.96 and 38,688.04

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Solution

The fourth proportional to 70,951.69, 97,912.96 and 38,688.04 is: 53,389.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,951.69 : 97,912.96 = 38,688.04 : x
  2. Step 2: Convert to fraction form
    70,951.69/97,912.96 = 38,688.04/x
  3. Step 3: Cross multiply
    70,951.69x = 97,912.96 × 38,688.04
  4. Step 4: Simplify right side
    70,951.69x = 3,788,060,513.00
  5. Step 5: Solve for x
    x = 3,788,060,513.00/70,951.69
  6. Step 6: Final answer
    x = 53,389.29

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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.