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Finding the Fourth Proportional to 71,368.98, 98,495.19 and 39,540.84

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Solution

The fourth proportional to 71,368.98, 98,495.19 and 39,540.84 is: 54,569.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,368.98 : 98,495.19 = 39,540.84 : x
  2. Step 2: Convert to fraction form
    71,368.98/98,495.19 = 39,540.84/x
  3. Step 3: Cross multiply
    71,368.98x = 98,495.19 × 39,540.84
  4. Step 4: Simplify right side
    71,368.98x = 3,894,582,548.56
  5. Step 5: Solve for x
    x = 3,894,582,548.56/71,368.98
  6. Step 6: Final answer
    x = 54,569.68

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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.