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Finding the Fourth Proportional to 70,939.68, 97,898.24 and 39,109.92

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Solution

The fourth proportional to 70,939.68, 97,898.24 and 39,109.92 is: 53,972.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,939.68 : 97,898.24 = 39,109.92 : x
  2. Step 2: Convert to fraction form
    70,939.68/97,898.24 = 39,109.92/x
  3. Step 3: Cross multiply
    70,939.68x = 97,898.24 × 39,109.92
  4. Step 4: Simplify right side
    70,939.68x = 3,828,792,334.54
  5. Step 5: Solve for x
    x = 3,828,792,334.54/70,939.68
  6. Step 6: Final answer
    x = 53,972.51

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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.