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Finding the Fourth Proportional to 89,124.96, 122,984.28 and 51,391.92

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Solution

The fourth proportional to 89,124.96, 122,984.28 and 51,391.92 is: 70,916.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,124.96 : 122,984.28 = 51,391.92 : x
  2. Step 2: Convert to fraction form
    89,124.96/122,984.28 = 51,391.92/x
  3. Step 3: Cross multiply
    89,124.96x = 122,984.28 × 51,391.92
  4. Step 4: Simplify right side
    89,124.96x = 6,320,398,279.02
  5. Step 5: Solve for x
    x = 6,320,398,279.02/89,124.96
  6. Step 6: Final answer
    x = 70,916.14

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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.