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Finding the Fourth Proportional to 72,242.93, 108,905.84 and 67,426.13

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Solution

The fourth proportional to 72,242.93, 108,905.84 and 67,426.13 is: 101,644.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,242.93 : 108,905.84 = 67,426.13 : x
  2. Step 2: Convert to fraction form
    72,242.93/108,905.84 = 67,426.13/x
  3. Step 3: Cross multiply
    72,242.93x = 108,905.84 × 67,426.13
  4. Step 4: Simplify right side
    72,242.93x = 7,343,098,443.94
  5. Step 5: Solve for x
    x = 7,343,098,443.94/72,242.93
  6. Step 6: Final answer
    x = 101,644.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.