Home / 76,909.76-106,135.49-42,454.51

Finding the Fourth Proportional to 76,909.76, 106,135.49 and 42,454.51

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Solution

The fourth proportional to 76,909.76, 106,135.49 and 42,454.51 is: 58,587.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,909.76 : 106,135.49 = 42,454.51 : x
  2. Step 2: Convert to fraction form
    76,909.76/106,135.49 = 42,454.51/x
  3. Step 3: Cross multiply
    76,909.76x = 106,135.49 × 42,454.51
  4. Step 4: Simplify right side
    76,909.76x = 4,505,930,181.76
  5. Step 5: Solve for x
    x = 4,505,930,181.76/76,909.76
  6. Step 6: Final answer
    x = 58,587.24

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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.