Home / 82,766.60-123,587.04-78,089.15

Finding the Fourth Proportional to 82,766.60, 123,587.04 and 78,089.15

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Solution

The fourth proportional to 82,766.60, 123,587.04 and 78,089.15 is: 116,602.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,766.60 : 123,587.04 = 78,089.15 : x
  2. Step 2: Convert to fraction form
    82,766.60/123,587.04 = 78,089.15/x
  3. Step 3: Cross multiply
    82,766.60x = 123,587.04 × 78,089.15
  4. Step 4: Simplify right side
    82,766.60x = 9,650,806,904.62
  5. Step 5: Solve for x
    x = 9,650,806,904.62/82,766.60
  6. Step 6: Final answer
    x = 116,602.67

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.