Home / 84,294.28-126,459.88-31,703.74

Finding the Fourth Proportional to 84,294.28, 126,459.88 and 31,703.74

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Solution

The fourth proportional to 84,294.28, 126,459.88 and 31,703.74 is: 47,562.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,294.28 : 126,459.88 = 31,703.74 : x
  2. Step 2: Convert to fraction form
    84,294.28/126,459.88 = 31,703.74/x
  3. Step 3: Cross multiply
    84,294.28x = 126,459.88 × 31,703.74
  4. Step 4: Simplify right side
    84,294.28x = 4,009,251,155.95
  5. Step 5: Solve for x
    x = 4,009,251,155.95/84,294.28
  6. Step 6: Final answer
    x = 47,562.55

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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.