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Finding the Fourth Proportional to 103,597.86, 155,381.41 and 28,710.20

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Solution

The fourth proportional to 103,597.86, 155,381.41 and 28,710.20 is: 43,061.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,597.86 : 155,381.41 = 28,710.20 : x
  2. Step 2: Convert to fraction form
    103,597.86/155,381.41 = 28,710.20/x
  3. Step 3: Cross multiply
    103,597.86x = 155,381.41 × 28,710.20
  4. Step 4: Simplify right side
    103,597.86x = 4,461,031,357.38
  5. Step 5: Solve for x
    x = 4,461,031,357.38/103,597.86
  6. Step 6: Final answer
    x = 43,061.04

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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.