Home / 88,686.12-122,287.62-72,502.92

Finding the Fourth Proportional to 88,686.12, 122,287.62 and 72,502.92

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Solution

The fourth proportional to 88,686.12, 122,287.62 and 72,502.92 is: 99,972.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,686.12 : 122,287.62 = 72,502.92 : x
  2. Step 2: Convert to fraction form
    88,686.12/122,287.62 = 72,502.92/x
  3. Step 3: Cross multiply
    88,686.12x = 122,287.62 × 72,502.92
  4. Step 4: Simplify right side
    88,686.12x = 8,866,209,529.85
  5. Step 5: Solve for x
    x = 8,866,209,529.85/88,686.12
  6. Step 6: Final answer
    x = 99,972.91

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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.