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Finding the Fourth Proportional to 72,641.25, 100,221.89 and 44,332.77

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Solution

The fourth proportional to 72,641.25, 100,221.89 and 44,332.77 is: 61,165.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,641.25 : 100,221.89 = 44,332.77 : x
  2. Step 2: Convert to fraction form
    72,641.25/100,221.89 = 44,332.77/x
  3. Step 3: Cross multiply
    72,641.25x = 100,221.89 × 44,332.77
  4. Step 4: Simplify right side
    72,641.25x = 4,443,113,776.67
  5. Step 5: Solve for x
    x = 4,443,113,776.67/72,641.25
  6. Step 6: Final answer
    x = 61,165.16

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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.