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Finding the Fourth Proportional to 56,995.65, 78,673.68 and 39,149.73

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Solution

The fourth proportional to 56,995.65, 78,673.68 and 39,149.73 is: 54,040.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,995.65 : 78,673.68 = 39,149.73 : x
  2. Step 2: Convert to fraction form
    56,995.65/78,673.68 = 39,149.73/x
  3. Step 3: Cross multiply
    56,995.65x = 78,673.68 × 39,149.73
  4. Step 4: Simplify right side
    56,995.65x = 3,080,053,330.11
  5. Step 5: Solve for x
    x = 3,080,053,330.11/56,995.65
  6. Step 6: Final answer
    x = 54,040.15

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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.