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Finding the Fourth Proportional to 73,987.77, 102,079.86 and 45,277.50

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Solution

The fourth proportional to 73,987.77, 102,079.86 and 45,277.50 is: 62,468.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,987.77 : 102,079.86 = 45,277.50 : x
  2. Step 2: Convert to fraction form
    73,987.77/102,079.86 = 45,277.50/x
  3. Step 3: Cross multiply
    73,987.77x = 102,079.86 × 45,277.50
  4. Step 4: Simplify right side
    73,987.77x = 4,621,920,861.15
  5. Step 5: Solve for x
    x = 4,621,920,861.15/73,987.77
  6. Step 6: Final answer
    x = 62,468.71

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.