Home / 76,565.81-114,839.59-20,410.13

Finding the Fourth Proportional to 76,565.81, 114,839.59 and 20,410.13

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Solution

The fourth proportional to 76,565.81, 114,839.59 and 20,410.13 is: 30,612.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,565.81 : 114,839.59 = 20,410.13 : x
  2. Step 2: Convert to fraction form
    76,565.81/114,839.59 = 20,410.13/x
  3. Step 3: Cross multiply
    76,565.81x = 114,839.59 × 20,410.13
  4. Step 4: Simplify right side
    76,565.81x = 2,343,890,961.05
  5. Step 5: Solve for x
    x = 2,343,890,961.05/76,565.81
  6. Step 6: Final answer
    x = 30,612.76

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.