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Finding the Fourth Proportional to 91,073.60, 136,602.72 and 51,506.24

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Solution

The fourth proportional to 91,073.60, 136,602.72 and 51,506.24 is: 77,255.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,073.60 : 136,602.72 = 51,506.24 : x
  2. Step 2: Convert to fraction form
    91,073.60/136,602.72 = 51,506.24/x
  3. Step 3: Cross multiply
    91,073.60x = 136,602.72 × 51,506.24
  4. Step 4: Simplify right side
    91,073.60x = 7,035,892,480.97
  5. Step 5: Solve for x
    x = 7,035,892,480.97/91,073.60
  6. Step 6: Final answer
    x = 77,255.02

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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.