Home / 51,757.20-71,421.84-30,543.12

Finding the Fourth Proportional to 51,757.20, 71,421.84 and 30,543.12

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Solution

The fourth proportional to 51,757.20, 71,421.84 and 30,543.12 is: 42,147.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,757.20 : 71,421.84 = 30,543.12 : x
  2. Step 2: Convert to fraction form
    51,757.20/71,421.84 = 30,543.12/x
  3. Step 3: Cross multiply
    51,757.20x = 71,421.84 × 30,543.12
  4. Step 4: Simplify right side
    51,757.20x = 2,181,445,829.74
  5. Step 5: Solve for x
    x = 2,181,445,829.74/51,757.20
  6. Step 6: Final answer
    x = 42,147.68

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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.