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Finding the Fourth Proportional to 57,780.48, 79,659.96 and 45,883.20

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Solution

The fourth proportional to 57,780.48, 79,659.96 and 45,883.20 is: 63,257.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,780.48 : 79,659.96 = 45,883.20 : x
  2. Step 2: Convert to fraction form
    57,780.48/79,659.96 = 45,883.20/x
  3. Step 3: Cross multiply
    57,780.48x = 79,659.96 × 45,883.20
  4. Step 4: Simplify right side
    57,780.48x = 3,655,053,876.67
  5. Step 5: Solve for x
    x = 3,655,053,876.67/57,780.48
  6. Step 6: Final answer
    x = 63,257.59

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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.