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Finding the Fourth Proportional to 103,480.64, 155,255.52 and 41,134.40

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Solution

The fourth proportional to 103,480.64, 155,255.52 and 41,134.40 is: 61,715.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,480.64 : 155,255.52 = 41,134.40 : x
  2. Step 2: Convert to fraction form
    103,480.64/155,255.52 = 41,134.40/x
  3. Step 3: Cross multiply
    103,480.64x = 155,255.52 × 41,134.40
  4. Step 4: Simplify right side
    103,480.64x = 6,386,342,661.89
  5. Step 5: Solve for x
    x = 6,386,342,661.89/103,480.64
  6. Step 6: Final answer
    x = 61,715.34

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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.