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Finding the Fourth Proportional to 92,701.17, 127,989.05 and 54,987.57

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Solution

The fourth proportional to 92,701.17, 127,989.05 and 54,987.57 is: 75,919.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,701.17 : 127,989.05 = 54,987.57 : x
  2. Step 2: Convert to fraction form
    92,701.17/127,989.05 = 54,987.57/x
  3. Step 3: Cross multiply
    92,701.17x = 127,989.05 × 54,987.57
  4. Step 4: Simplify right side
    92,701.17x = 7,037,806,571.17
  5. Step 5: Solve for x
    x = 7,037,806,571.17/92,701.17
  6. Step 6: Final answer
    x = 75,919.29

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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.