Home / 78,310.43-108,068.48-42,500.46

Finding the Fourth Proportional to 78,310.43, 108,068.48 and 42,500.46

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Solution

The fourth proportional to 78,310.43, 108,068.48 and 42,500.46 is: 58,650.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,310.43 : 108,068.48 = 42,500.46 : x
  2. Step 2: Convert to fraction form
    78,310.43/108,068.48 = 42,500.46/x
  3. Step 3: Cross multiply
    78,310.43x = 108,068.48 × 42,500.46
  4. Step 4: Simplify right side
    78,310.43x = 4,592,960,111.50
  5. Step 5: Solve for x
    x = 4,592,960,111.50/78,310.43
  6. Step 6: Final answer
    x = 58,650.68

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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.