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Finding the Fourth Proportional to 56,420.80, 77,861.22 and 35,200.42

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Solution

The fourth proportional to 56,420.80, 77,861.22 and 35,200.42 is: 48,576.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,420.80 : 77,861.22 = 35,200.42 : x
  2. Step 2: Convert to fraction form
    56,420.80/77,861.22 = 35,200.42/x
  3. Step 3: Cross multiply
    56,420.80x = 77,861.22 × 35,200.42
  4. Step 4: Simplify right side
    56,420.80x = 2,740,747,645.71
  5. Step 5: Solve for x
    x = 2,740,747,645.71/56,420.80
  6. Step 6: Final answer
    x = 48,576.90

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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.