Home / 87,966.02-121,406.08-55,703.58

Finding the Fourth Proportional to 87,966.02, 121,406.08 and 55,703.58

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Solution

The fourth proportional to 87,966.02, 121,406.08 and 55,703.58 is: 76,879.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,966.02 : 121,406.08 = 55,703.58 : x
  2. Step 2: Convert to fraction form
    87,966.02/121,406.08 = 55,703.58/x
  3. Step 3: Cross multiply
    87,966.02x = 121,406.08 × 55,703.58
  4. Step 4: Simplify right side
    87,966.02x = 6,762,753,273.70
  5. Step 5: Solve for x
    x = 6,762,753,273.70/87,966.02
  6. Step 6: Final answer
    x = 76,879.16

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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.