Home / 78,766.08-108,713.52-76,269.12

Finding the Fourth Proportional to 78,766.08, 108,713.52 and 76,269.12

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Solution

The fourth proportional to 78,766.08, 108,713.52 and 76,269.12 is: 105,267.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,766.08 : 108,713.52 = 76,269.12 : x
  2. Step 2: Convert to fraction form
    78,766.08/108,713.52 = 76,269.12/x
  3. Step 3: Cross multiply
    78,766.08x = 108,713.52 × 76,269.12
  4. Step 4: Simplify right side
    78,766.08x = 8,291,484,502.50
  5. Step 5: Solve for x
    x = 8,291,484,502.50/78,766.08
  6. Step 6: Final answer
    x = 105,267.20

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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.