Home / 78,862.12-118,312-26,272.04

Finding the Fourth Proportional to 78,862.12, 118,312 and 26,272.04

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Solution

The fourth proportional to 78,862.12, 118,312 and 26,272.04 is: 39,414.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,862.12 : 118,312 = 26,272.04 : x
  2. Step 2: Convert to fraction form
    78,862.12/118,312 = 26,272.04/x
  3. Step 3: Cross multiply
    78,862.12x = 118,312 × 26,272.04
  4. Step 4: Simplify right side
    78,862.12x = 3,108,297,596.48
  5. Step 5: Solve for x
    x = 3,108,297,596.48/78,862.12
  6. Step 6: Final answer
    x = 39,414.33

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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.