Home / 78,682.19-118,045.19-34,312.85

Finding the Fourth Proportional to 78,682.19, 118,045.19 and 34,312.85

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Solution

The fourth proportional to 78,682.19, 118,045.19 and 34,312.85 is: 51,478.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,682.19 : 118,045.19 = 34,312.85 : x
  2. Step 2: Convert to fraction form
    78,682.19/118,045.19 = 34,312.85/x
  3. Step 3: Cross multiply
    78,682.19x = 118,045.19 × 34,312.85
  4. Step 4: Simplify right side
    78,682.19x = 4,050,466,726.13
  5. Step 5: Solve for x
    x = 4,050,466,726.13/78,682.19
  6. Step 6: Final answer
    x = 51,478.83

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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.