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Finding the Fourth Proportional to 72,712.97, 100,333.07 and 40,875.71

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Solution

The fourth proportional to 72,712.97, 100,333.07 and 40,875.71 is: 56,402.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,712.97 : 100,333.07 = 40,875.71 : x
  2. Step 2: Convert to fraction form
    72,712.97/100,333.07 = 40,875.71/x
  3. Step 3: Cross multiply
    72,712.97x = 100,333.07 × 40,875.71
  4. Step 4: Simplify right side
    72,712.97x = 4,101,185,709.05
  5. Step 5: Solve for x
    x = 4,101,185,709.05/72,712.97
  6. Step 6: Final answer
    x = 56,402.40

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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.