Home / 42,422.40-63,670.05-18,766.35

Finding the Fourth Proportional to 42,422.40, 63,670.05 and 18,766.35

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Solution

The fourth proportional to 42,422.40, 63,670.05 and 18,766.35 is: 28,165.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,422.40 : 63,670.05 = 18,766.35 : x
  2. Step 2: Convert to fraction form
    42,422.40/63,670.05 = 18,766.35/x
  3. Step 3: Cross multiply
    42,422.40x = 63,670.05 × 18,766.35
  4. Step 4: Simplify right side
    42,422.40x = 1,194,854,442.82
  5. Step 5: Solve for x
    x = 1,194,854,442.82/42,422.40
  6. Step 6: Final answer
    x = 28,165.65

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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.