Home / 85,565.28-128,315.96-29,389.44

Finding the Fourth Proportional to 85,565.28, 128,315.96 and 29,389.44

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Solution

The fourth proportional to 85,565.28, 128,315.96 and 29,389.44 is: 44,073.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,565.28 : 128,315.96 = 29,389.44 : x
  2. Step 2: Convert to fraction form
    85,565.28/128,315.96 = 29,389.44/x
  3. Step 3: Cross multiply
    85,565.28x = 128,315.96 × 29,389.44
  4. Step 4: Simplify right side
    85,565.28x = 3,771,134,207.46
  5. Step 5: Solve for x
    x = 3,771,134,207.46/85,565.28
  6. Step 6: Final answer
    x = 44,073.18

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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.