Home / 78,625.18-108,500.22-42,814.90

Finding the Fourth Proportional to 78,625.18, 108,500.22 and 42,814.90

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Solution

The fourth proportional to 78,625.18, 108,500.22 and 42,814.90 is: 59,083.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,625.18 : 108,500.22 = 42,814.90 : x
  2. Step 2: Convert to fraction form
    78,625.18/108,500.22 = 42,814.90/x
  3. Step 3: Cross multiply
    78,625.18x = 108,500.22 × 42,814.90
  4. Step 4: Simplify right side
    78,625.18x = 4,645,426,069.28
  5. Step 5: Solve for x
    x = 4,645,426,069.28/78,625.18
  6. Step 6: Final answer
    x = 59,083.19

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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.