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Finding the Fourth Proportional to 145,870.92, 218,843.28 and 40,689.81

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Solution

The fourth proportional to 145,870.92, 218,843.28 and 40,689.81 is: 61,045.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,870.92 : 218,843.28 = 40,689.81 : x
  2. Step 2: Convert to fraction form
    145,870.92/218,843.28 = 40,689.81/x
  3. Step 3: Cross multiply
    145,870.92x = 218,843.28 × 40,689.81
  4. Step 4: Simplify right side
    145,870.92x = 8,904,691,482.98
  5. Step 5: Solve for x
    x = 8,904,691,482.98/145,870.92
  6. Step 6: Final answer
    x = 61,045.01

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.