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Finding the Fourth Proportional to 89,121.84, 123,121.68 and 58,567.68

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Solution

The fourth proportional to 89,121.84, 123,121.68 and 58,567.68 is: 80,911.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,121.84 : 123,121.68 = 58,567.68 : x
  2. Step 2: Convert to fraction form
    89,121.84/123,121.68 = 58,567.68/x
  3. Step 3: Cross multiply
    89,121.84x = 123,121.68 × 58,567.68
  4. Step 4: Simplify right side
    89,121.84x = 7,210,951,155.30
  5. Step 5: Solve for x
    x = 7,210,951,155.30/89,121.84
  6. Step 6: Final answer
    x = 80,911.16

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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.