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Finding the Fourth Proportional to 71,302.91, 98,403.47 and 40,676.68

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Solution

The fourth proportional to 71,302.91, 98,403.47 and 40,676.68 is: 56,136.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,302.91 : 98,403.47 = 40,676.68 : x
  2. Step 2: Convert to fraction form
    71,302.91/98,403.47 = 40,676.68/x
  3. Step 3: Cross multiply
    71,302.91x = 98,403.47 × 40,676.68
  4. Step 4: Simplify right side
    71,302.91x = 4,002,725,968.06
  5. Step 5: Solve for x
    x = 4,002,725,968.06/71,302.91
  6. Step 6: Final answer
    x = 56,136.93

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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.