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Finding the Fourth Proportional to 84,988.53, 127,482.75 and 40,480.34

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Solution

The fourth proportional to 84,988.53, 127,482.75 and 40,480.34 is: 60,720.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,988.53 : 127,482.75 = 40,480.34 : x
  2. Step 2: Convert to fraction form
    84,988.53/127,482.75 = 40,480.34/x
  3. Step 3: Cross multiply
    84,988.53x = 127,482.75 × 40,480.34
  4. Step 4: Simplify right side
    84,988.53x = 5,160,544,426.72
  5. Step 5: Solve for x
    x = 5,160,544,426.72/84,988.53
  6. Step 6: Final answer
    x = 60,720.48

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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.