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Finding the Fourth Proportional to 75,369.74, 112,482.19 and 72,318.11

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Solution

The fourth proportional to 75,369.74, 112,482.19 and 72,318.11 is: 107,927.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,369.74 : 112,482.19 = 72,318.11 : x
  2. Step 2: Convert to fraction form
    75,369.74/112,482.19 = 72,318.11/x
  3. Step 3: Cross multiply
    75,369.74x = 112,482.19 × 72,318.11
  4. Step 4: Simplify right side
    75,369.74x = 8,134,499,674.47
  5. Step 5: Solve for x
    x = 8,134,499,674.47/75,369.74
  6. Step 6: Final answer
    x = 107,927.92

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.