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Finding the Fourth Proportional to 63,419.80, 95,140.61 and 21,303.90

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Solution

The fourth proportional to 63,419.80, 95,140.61 and 21,303.90 is: 31,959.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,419.80 : 95,140.61 = 21,303.90 : x
  2. Step 2: Convert to fraction form
    63,419.80/95,140.61 = 21,303.90/x
  3. Step 3: Cross multiply
    63,419.80x = 95,140.61 × 21,303.90
  4. Step 4: Simplify right side
    63,419.80x = 2,026,866,041.38
  5. Step 5: Solve for x
    x = 2,026,866,041.38/63,419.80
  6. Step 6: Final answer
    x = 31,959.51

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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.