Home / 78,400.02-108,193.19-42,590.73

Finding the Fourth Proportional to 78,400.02, 108,193.19 and 42,590.73

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Solution

The fourth proportional to 78,400.02, 108,193.19 and 42,590.73 is: 58,775.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,400.02 : 108,193.19 = 42,590.73 : x
  2. Step 2: Convert to fraction form
    78,400.02/108,193.19 = 42,590.73/x
  3. Step 3: Cross multiply
    78,400.02x = 108,193.19 × 42,590.73
  4. Step 4: Simplify right side
    78,400.02x = 4,608,026,730.18
  5. Step 5: Solve for x
    x = 4,608,026,730.18/78,400.02
  6. Step 6: Final answer
    x = 58,775.84

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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.