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Finding the Fourth Proportional to 63,341.48, 87,397.52 and 40,380

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Solution

The fourth proportional to 63,341.48, 87,397.52 and 40,380 is: 55,715.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,341.48 : 87,397.52 = 40,380 : x
  2. Step 2: Convert to fraction form
    63,341.48/87,397.52 = 40,380/x
  3. Step 3: Cross multiply
    63,341.48x = 87,397.52 × 40,380
  4. Step 4: Simplify right side
    63,341.48x = 3,529,111,655.70
  5. Step 5: Solve for x
    x = 3,529,111,655.70/63,341.48
  6. Step 6: Final answer
    x = 55,715.65

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.