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Finding the Fourth Proportional to 76,237.00, 105,211.10 and 42,249.20

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Solution

The fourth proportional to 76,237.00, 105,211.10 and 42,249.20 is: 58,306.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,237.00 : 105,211.10 = 42,249.20 : x
  2. Step 2: Convert to fraction form
    76,237.00/105,211.10 = 42,249.20/x
  3. Step 3: Cross multiply
    76,237.00x = 105,211.10 × 42,249.20
  4. Step 4: Simplify right side
    76,237.00x = 4,445,084,385.69
  5. Step 5: Solve for x
    x = 4,445,084,385.69/76,237.00
  6. Step 6: Final answer
    x = 58,306.13

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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.