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Finding the Fourth Proportional to 71,368.13, 98,480.84 and 39,531.08

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Solution

The fourth proportional to 71,368.13, 98,480.84 and 39,531.08 is: 54,548.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,368.13 : 98,480.84 = 39,531.08 : x
  2. Step 2: Convert to fraction form
    71,368.13/98,480.84 = 39,531.08/x
  3. Step 3: Cross multiply
    71,368.13x = 98,480.84 × 39,531.08
  4. Step 4: Simplify right side
    71,368.13x = 3,893,054,013.05
  5. Step 5: Solve for x
    x = 3,893,054,013.05/71,368.13
  6. Step 6: Final answer
    x = 54,548.91

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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.