Home / 42,543.63-63,788.11-20,356.52

Finding the Fourth Proportional to 42,543.63, 63,788.11 and 20,356.52

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Solution

The fourth proportional to 42,543.63, 63,788.11 and 20,356.52 is: 30,521.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,543.63 : 63,788.11 = 20,356.52 : x
  2. Step 2: Convert to fraction form
    42,543.63/63,788.11 = 20,356.52/x
  3. Step 3: Cross multiply
    42,543.63x = 63,788.11 × 20,356.52
  4. Step 4: Simplify right side
    42,543.63x = 1,298,503,567.15
  5. Step 5: Solve for x
    x = 1,298,503,567.15/42,543.63
  6. Step 6: Final answer
    x = 30,521.69

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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.