Home / 89,439.75-123,430.10-51,206.13

Finding the Fourth Proportional to 89,439.75, 123,430.10 and 51,206.13

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Solution

The fourth proportional to 89,439.75, 123,430.10 and 51,206.13 is: 70,666.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,439.75 : 123,430.10 = 51,206.13 : x
  2. Step 2: Convert to fraction form
    89,439.75/123,430.10 = 51,206.13/x
  3. Step 3: Cross multiply
    89,439.75x = 123,430.10 × 51,206.13
  4. Step 4: Simplify right side
    89,439.75x = 6,320,377,490.48
  5. Step 5: Solve for x
    x = 6,320,377,490.48/89,439.75
  6. Step 6: Final answer
    x = 70,666.31

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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.