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Finding the Fourth Proportional to 72,248.66, 99,700.82 and 40,416.88

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Solution

The fourth proportional to 72,248.66, 99,700.82 and 40,416.88 is: 55,773.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,248.66 : 99,700.82 = 40,416.88 : x
  2. Step 2: Convert to fraction form
    72,248.66/99,700.82 = 40,416.88/x
  3. Step 3: Cross multiply
    72,248.66x = 99,700.82 × 40,416.88
  4. Step 4: Simplify right side
    72,248.66x = 4,029,596,077.84
  5. Step 5: Solve for x
    x = 4,029,596,077.84/72,248.66
  6. Step 6: Final answer
    x = 55,773.99

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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.