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Finding the Fourth Proportional to 104,559.61, 156,751.25 and 45,350.70

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Solution

The fourth proportional to 104,559.61, 156,751.25 and 45,350.70 is: 67,987.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,559.61 : 156,751.25 = 45,350.70 : x
  2. Step 2: Convert to fraction form
    104,559.61/156,751.25 = 45,350.70/x
  3. Step 3: Cross multiply
    104,559.61x = 156,751.25 × 45,350.70
  4. Step 4: Simplify right side
    104,559.61x = 7,108,778,913.38
  5. Step 5: Solve for x
    x = 7,108,778,913.38/104,559.61
  6. Step 6: Final answer
    x = 67,987.81

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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.