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Finding the Fourth Proportional to 75,343.68, 103,987.92 and 51,461.52

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Solution

The fourth proportional to 75,343.68, 103,987.92 and 51,461.52 is: 71,026.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,343.68 : 103,987.92 = 51,461.52 : x
  2. Step 2: Convert to fraction form
    75,343.68/103,987.92 = 51,461.52/x
  3. Step 3: Cross multiply
    75,343.68x = 103,987.92 × 51,461.52
  4. Step 4: Simplify right side
    75,343.68x = 5,351,376,424.84
  5. Step 5: Solve for x
    x = 5,351,376,424.84/75,343.68
  6. Step 6: Final answer
    x = 71,026.22

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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.