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Finding the Fourth Proportional to 42,353, 63,506.70 and 14,263.70

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Solution

The fourth proportional to 42,353, 63,506.70 and 14,263.70 is: 21,387.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,353 : 63,506.70 = 14,263.70 : x
  2. Step 2: Convert to fraction form
    42,353/63,506.70 = 14,263.70/x
  3. Step 3: Cross multiply
    42,353x = 63,506.70 × 14,263.70
  4. Step 4: Simplify right side
    42,353x = 905,840,516.79
  5. Step 5: Solve for x
    x = 905,840,516.79/42,353
  6. Step 6: Final answer
    x = 21,387.87

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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.