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Finding the Fourth Proportional to 92,720.64, 127,970.87 and 54,480.18

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Solution

The fourth proportional to 92,720.64, 127,970.87 and 54,480.18 is: 75,192.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,720.64 : 127,970.87 = 54,480.18 : x
  2. Step 2: Convert to fraction form
    92,720.64/127,970.87 = 54,480.18/x
  3. Step 3: Cross multiply
    92,720.64x = 127,970.87 × 54,480.18
  4. Step 4: Simplify right side
    92,720.64x = 6,971,876,546.30
  5. Step 5: Solve for x
    x = 6,971,876,546.30/92,720.64
  6. Step 6: Final answer
    x = 75,192.28

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1.5x scale

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.