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Finding the Fourth Proportional to 73,191.72, 101,005.38 and 39,657.80

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Solution

The fourth proportional to 73,191.72, 101,005.38 and 39,657.80 is: 54,728.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,191.72 : 101,005.38 = 39,657.80 : x
  2. Step 2: Convert to fraction form
    73,191.72/101,005.38 = 39,657.80/x
  3. Step 3: Cross multiply
    73,191.72x = 101,005.38 × 39,657.80
  4. Step 4: Simplify right side
    73,191.72x = 4,005,651,158.96
  5. Step 5: Solve for x
    x = 4,005,651,158.96/73,191.72
  6. Step 6: Final answer
    x = 54,728.20

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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.