Home / 42,503.20-63,657.60-21,702.40

Finding the Fourth Proportional to 42,503.20, 63,657.60 and 21,702.40

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Solution

The fourth proportional to 42,503.20, 63,657.60 and 21,702.40 is: 32,503.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,503.20 : 63,657.60 = 21,702.40 : x
  2. Step 2: Convert to fraction form
    42,503.20/63,657.60 = 21,702.40/x
  3. Step 3: Cross multiply
    42,503.20x = 63,657.60 × 21,702.40
  4. Step 4: Simplify right side
    42,503.20x = 1,381,522,698.24
  5. Step 5: Solve for x
    x = 1,381,522,698.24/42,503.20
  6. Step 6: Final answer
    x = 32,503.97

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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.