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Finding the Fourth Proportional to 75,073.48, 112,385.86 and 45,401.56

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Solution

The fourth proportional to 75,073.48, 112,385.86 and 45,401.56 is: 67,966.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,073.48 : 112,385.86 = 45,401.56 : x
  2. Step 2: Convert to fraction form
    75,073.48/112,385.86 = 45,401.56/x
  3. Step 3: Cross multiply
    75,073.48x = 112,385.86 × 45,401.56
  4. Step 4: Simplify right side
    75,073.48x = 5,102,493,365.94
  5. Step 5: Solve for x
    x = 5,102,493,365.94/75,073.48
  6. Step 6: Final answer
    x = 67,966.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.