Home / 81,218.44-121,701.78-56,306.92

Finding the Fourth Proportional to 81,218.44, 121,701.78 and 56,306.92

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Solution

The fourth proportional to 81,218.44, 121,701.78 and 56,306.92 is: 84,373.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,218.44 : 121,701.78 = 56,306.92 : x
  2. Step 2: Convert to fraction form
    81,218.44/121,701.78 = 56,306.92/x
  3. Step 3: Cross multiply
    81,218.44x = 121,701.78 × 56,306.92
  4. Step 4: Simplify right side
    81,218.44x = 6,852,652,390.32
  5. Step 5: Solve for x
    x = 6,852,652,390.32/81,218.44
  6. Step 6: Final answer
    x = 84,373.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.