Home / 40,720.56-61,074.48-15,772.20

Finding the Fourth Proportional to 40,720.56, 61,074.48 and 15,772.20

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Solution

The fourth proportional to 40,720.56, 61,074.48 and 15,772.20 is: 23,655.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,720.56 : 61,074.48 = 15,772.20 : x
  2. Step 2: Convert to fraction form
    40,720.56/61,074.48 = 15,772.20/x
  3. Step 3: Cross multiply
    40,720.56x = 61,074.48 × 15,772.20
  4. Step 4: Simplify right side
    40,720.56x = 963,278,913.46
  5. Step 5: Solve for x
    x = 963,278,913.46/40,720.56
  6. Step 6: Final answer
    x = 23,655.84

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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.