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Finding the Fourth Proportional to 79,010.85, 109,045.00 and 45,031.55

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Solution

The fourth proportional to 79,010.85, 109,045.00 and 45,031.55 is: 62,149.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,010.85 : 109,045.00 = 45,031.55 : x
  2. Step 2: Convert to fraction form
    79,010.85/109,045.00 = 45,031.55/x
  3. Step 3: Cross multiply
    79,010.85x = 109,045.00 × 45,031.55
  4. Step 4: Simplify right side
    79,010.85x = 4,910,464,984.56
  5. Step 5: Solve for x
    x = 4,910,464,984.56/79,010.85
  6. Step 6: Final answer
    x = 62,149.25

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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.