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Finding the Fourth Proportional to 72,805.27, 100,454.65 and 40,962.55

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Solution

The fourth proportional to 72,805.27, 100,454.65 and 40,962.55 is: 56,518.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,805.27 : 100,454.65 = 40,962.55 : x
  2. Step 2: Convert to fraction form
    72,805.27/100,454.65 = 40,962.55/x
  3. Step 3: Cross multiply
    72,805.27x = 100,454.65 × 40,962.55
  4. Step 4: Simplify right side
    72,805.27x = 4,114,878,623.36
  5. Step 5: Solve for x
    x = 4,114,878,623.36/72,805.27
  6. Step 6: Final answer
    x = 56,518.97

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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.