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Finding the Fourth Proportional to 103,432.55, 155,127.04 and 47,256.71

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Solution

The fourth proportional to 103,432.55, 155,127.04 and 47,256.71 is: 70,875.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,432.55 : 155,127.04 = 47,256.71 : x
  2. Step 2: Convert to fraction form
    103,432.55/155,127.04 = 47,256.71/x
  3. Step 3: Cross multiply
    103,432.55x = 155,127.04 × 47,256.71
  4. Step 4: Simplify right side
    103,432.55x = 7,330,793,542.44
  5. Step 5: Solve for x
    x = 7,330,793,542.44/103,432.55
  6. Step 6: Final answer
    x = 70,875.11

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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.