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Finding the Fourth Proportional to 71,408.01, 98,541.54 and 39,576.63

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Solution

The fourth proportional to 71,408.01, 98,541.54 and 39,576.63 is: 54,614.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,408.01 : 98,541.54 = 39,576.63 : x
  2. Step 2: Convert to fraction form
    71,408.01/98,541.54 = 39,576.63/x
  3. Step 3: Cross multiply
    71,408.01x = 98,541.54 × 39,576.63
  4. Step 4: Simplify right side
    71,408.01x = 3,899,942,068.21
  5. Step 5: Solve for x
    x = 3,899,942,068.21/71,408.01
  6. Step 6: Final answer
    x = 54,614.91

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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.