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Finding the Fourth Proportional to 70,385.87, 97,132.53 and 38,555.29

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Solution

The fourth proportional to 70,385.87, 97,132.53 and 38,555.29 is: 53,206.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,385.87 : 97,132.53 = 38,555.29 : x
  2. Step 2: Convert to fraction form
    70,385.87/97,132.53 = 38,555.29/x
  3. Step 3: Cross multiply
    70,385.87x = 97,132.53 × 38,555.29
  4. Step 4: Simplify right side
    70,385.87x = 3,744,972,669.81
  5. Step 5: Solve for x
    x = 3,744,972,669.81/70,385.87
  6. Step 6: Final answer
    x = 53,206.31

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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.