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Finding the Fourth Proportional to 89,424.62, 123,405.93 and 49,138.32

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Solution

The fourth proportional to 89,424.62, 123,405.93 and 49,138.32 is: 67,810.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,424.62 : 123,405.93 = 49,138.32 : x
  2. Step 2: Convert to fraction form
    89,424.62/123,405.93 = 49,138.32/x
  3. Step 3: Cross multiply
    89,424.62x = 123,405.93 × 49,138.32
  4. Step 4: Simplify right side
    89,424.62x = 6,063,960,078.24
  5. Step 5: Solve for x
    x = 6,063,960,078.24/89,424.62
  6. Step 6: Final answer
    x = 67,810.86

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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.