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Finding the Fourth Proportional to 115,884.76, 173,841.72 and 40,987.30

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Solution

The fourth proportional to 115,884.76, 173,841.72 and 40,987.30 is: 61,486.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,884.76 : 173,841.72 = 40,987.30 : x
  2. Step 2: Convert to fraction form
    115,884.76/173,841.72 = 40,987.30/x
  3. Step 3: Cross multiply
    115,884.76x = 173,841.72 × 40,987.30
  4. Step 4: Simplify right side
    115,884.76x = 7,125,302,730.16
  5. Step 5: Solve for x
    x = 7,125,302,730.16/115,884.76
  6. Step 6: Final answer
    x = 61,486.11

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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.