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Finding the Fourth Proportional to 75,411.78, 104,001.48 and 57,463.80

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Solution

The fourth proportional to 75,411.78, 104,001.48 and 57,463.80 is: 79,249.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,411.78 : 104,001.48 = 57,463.80 : x
  2. Step 2: Convert to fraction form
    75,411.78/104,001.48 = 57,463.80/x
  3. Step 3: Cross multiply
    75,411.78x = 104,001.48 × 57,463.80
  4. Step 4: Simplify right side
    75,411.78x = 5,976,320,246.42
  5. Step 5: Solve for x
    x = 5,976,320,246.42/75,411.78
  6. Step 6: Final answer
    x = 79,249.16

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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.