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Finding the Fourth Proportional to 103,687.48, 155,525.74 and 51,079.20

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Solution

The fourth proportional to 103,687.48, 155,525.74 and 51,079.20 is: 76,616.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,687.48 : 155,525.74 = 51,079.20 : x
  2. Step 2: Convert to fraction form
    103,687.48/155,525.74 = 51,079.20/x
  3. Step 3: Cross multiply
    103,687.48x = 155,525.74 × 51,079.20
  4. Step 4: Simplify right side
    103,687.48x = 7,944,130,378.61
  5. Step 5: Solve for x
    x = 7,944,130,378.61/103,687.48
  6. Step 6: Final answer
    x = 76,616.10

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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.