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Finding the Fourth Proportional to 42,303.80, 63,411.04 and 14,197.20

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Solution

The fourth proportional to 42,303.80, 63,411.04 and 14,197.20 is: 21,280.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,303.80 : 63,411.04 = 14,197.20 : x
  2. Step 2: Convert to fraction form
    42,303.80/63,411.04 = 14,197.20/x
  3. Step 3: Cross multiply
    42,303.80x = 63,411.04 × 14,197.20
  4. Step 4: Simplify right side
    42,303.80x = 900,259,217.09
  5. Step 5: Solve for x
    x = 900,259,217.09/42,303.80
  6. Step 6: Final answer
    x = 21,280.81

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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.