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Finding the Fourth Proportional to 89,304.66, 123,240 and 49,019.11

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Solution

The fourth proportional to 89,304.66, 123,240 and 49,019.11 is: 67,646.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,304.66 : 123,240 = 49,019.11 : x
  2. Step 2: Convert to fraction form
    89,304.66/123,240 = 49,019.11/x
  3. Step 3: Cross multiply
    89,304.66x = 123,240 × 49,019.11
  4. Step 4: Simplify right side
    89,304.66x = 6,041,115,116.40
  5. Step 5: Solve for x
    x = 6,041,115,116.40/89,304.66
  6. Step 6: Final answer
    x = 67,646.14

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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.