Home / 81,348.69-121,864.11-56,043.74

Finding the Fourth Proportional to 81,348.69, 121,864.11 and 56,043.74

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Solution

The fourth proportional to 81,348.69, 121,864.11 and 56,043.74 is: 83,956.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,348.69 : 121,864.11 = 56,043.74 : x
  2. Step 2: Convert to fraction form
    81,348.69/121,864.11 = 56,043.74/x
  3. Step 3: Cross multiply
    81,348.69x = 121,864.11 × 56,043.74
  4. Step 4: Simplify right side
    81,348.69x = 6,829,719,886.85
  5. Step 5: Solve for x
    x = 6,829,719,886.85/81,348.69
  6. Step 6: Final answer
    x = 83,956.11

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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.