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Finding the Fourth Proportional to 115,871.60, 173,810.64 and 40,981.16

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Solution

The fourth proportional to 115,871.60, 173,810.64 and 40,981.16 is: 61,472.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,871.60 : 173,810.64 = 40,981.16 : x
  2. Step 2: Convert to fraction form
    115,871.60/173,810.64 = 40,981.16/x
  3. Step 3: Cross multiply
    115,871.60x = 173,810.64 × 40,981.16
  4. Step 4: Simplify right side
    115,871.60x = 7,122,961,647.54
  5. Step 5: Solve for x
    x = 7,122,961,647.54/115,871.60
  6. Step 6: Final answer
    x = 61,472.89

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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.