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Finding the Fourth Proportional to 45,245.40, 67,851.84 and 15,655.20

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Solution

The fourth proportional to 45,245.40, 67,851.84 and 15,655.20 is: 23,477.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,245.40 : 67,851.84 = 15,655.20 : x
  2. Step 2: Convert to fraction form
    45,245.40/67,851.84 = 15,655.20/x
  3. Step 3: Cross multiply
    45,245.40x = 67,851.84 × 15,655.20
  4. Step 4: Simplify right side
    45,245.40x = 1,062,234,125.57
  5. Step 5: Solve for x
    x = 1,062,234,125.57/45,245.40
  6. Step 6: Final answer
    x = 23,477.17

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1.5x scale

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.