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Finding the Fourth Proportional to 89,341.57, 133,333.84 and 85,724.92

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Solution

The fourth proportional to 89,341.57, 133,333.84 and 85,724.92 is: 127,936.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,341.57 : 133,333.84 = 85,724.92 : x
  2. Step 2: Convert to fraction form
    89,341.57/133,333.84 = 85,724.92/x
  3. Step 3: Cross multiply
    89,341.57x = 133,333.84 × 85,724.92
  4. Step 4: Simplify right side
    89,341.57x = 11,430,032,767.29
  5. Step 5: Solve for x
    x = 11,430,032,767.29/89,341.57
  6. Step 6: Final answer
    x = 127,936.33

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1.5x scale

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.