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Finding the Fourth Proportional to 72,560.38, 100,127.83 and 40,723.13

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Solution

The fourth proportional to 72,560.38, 100,127.83 and 40,723.13 is: 56,194.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,560.38 : 100,127.83 = 40,723.13 : x
  2. Step 2: Convert to fraction form
    72,560.38/100,127.83 = 40,723.13/x
  3. Step 3: Cross multiply
    72,560.38x = 100,127.83 × 40,723.13
  4. Step 4: Simplify right side
    72,560.38x = 4,077,518,637.71
  5. Step 5: Solve for x
    x = 4,077,518,637.71/72,560.38
  6. Step 6: Final answer
    x = 56,194.84

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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.