Home / 87,930-121,344.84-62,822.16

Finding the Fourth Proportional to 87,930, 121,344.84 and 62,822.16

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Solution

The fourth proportional to 87,930, 121,344.84 and 62,822.16 is: 86,695.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,930 : 121,344.84 = 62,822.16 : x
  2. Step 2: Convert to fraction form
    87,930/121,344.84 = 62,822.16/x
  3. Step 3: Cross multiply
    87,930x = 121,344.84 × 62,822.16
  4. Step 4: Simplify right side
    87,930x = 7,623,144,953.65
  5. Step 5: Solve for x
    x = 7,623,144,953.65/87,930
  6. Step 6: Final answer
    x = 86,695.61

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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.