Home / 83,931.20-125,637.60-48,766.40

Finding the Fourth Proportional to 83,931.20, 125,637.60 and 48,766.40

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Solution

The fourth proportional to 83,931.20, 125,637.60 and 48,766.40 is: 72,999.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,931.20 : 125,637.60 = 48,766.40 : x
  2. Step 2: Convert to fraction form
    83,931.20/125,637.60 = 48,766.40/x
  3. Step 3: Cross multiply
    83,931.20x = 125,637.60 × 48,766.40
  4. Step 4: Simplify right side
    83,931.20x = 6,126,893,456.64
  5. Step 5: Solve for x
    x = 6,126,893,456.64/83,931.20
  6. Step 6: Final answer
    x = 72,999.00

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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.