Home / 69,666.75-96,143.76-40,987.89

Finding the Fourth Proportional to 69,666.75, 96,143.76 and 40,987.89

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Solution

The fourth proportional to 69,666.75, 96,143.76 and 40,987.89 is: 56,565.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,666.75 : 96,143.76 = 40,987.89 : x
  2. Step 2: Convert to fraction form
    69,666.75/96,143.76 = 40,987.89/x
  3. Step 3: Cross multiply
    69,666.75x = 96,143.76 × 40,987.89
  4. Step 4: Simplify right side
    69,666.75x = 3,940,729,859.07
  5. Step 5: Solve for x
    x = 3,940,729,859.07/69,666.75
  6. Step 6: Final answer
    x = 56,565.43

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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.