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Finding the Fourth Proportional to 115,259.28, 172,769.04 and 48,643.80

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Solution

The fourth proportional to 115,259.28, 172,769.04 and 48,643.80 is: 72,915.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,259.28 : 172,769.04 = 48,643.80 : x
  2. Step 2: Convert to fraction form
    115,259.28/172,769.04 = 48,643.80/x
  3. Step 3: Cross multiply
    115,259.28x = 172,769.04 × 48,643.80
  4. Step 4: Simplify right side
    115,259.28x = 8,404,142,627.95
  5. Step 5: Solve for x
    x = 8,404,142,627.95/115,259.28
  6. Step 6: Final answer
    x = 72,915.11

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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.