Home / 75,128.90-103,674.68-41,136.78

Finding the Fourth Proportional to 75,128.90, 103,674.68 and 41,136.78

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Solution

The fourth proportional to 75,128.90, 103,674.68 and 41,136.78 is: 56,767.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,128.90 : 103,674.68 = 41,136.78 : x
  2. Step 2: Convert to fraction form
    75,128.90/103,674.68 = 41,136.78/x
  3. Step 3: Cross multiply
    75,128.90x = 103,674.68 × 41,136.78
  4. Step 4: Simplify right side
    75,128.90x = 4,264,842,502.73
  5. Step 5: Solve for x
    x = 4,264,842,502.73/75,128.90
  6. Step 6: Final answer
    x = 56,767.00

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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.