Home / 85,785.24-128,695.04-29,627.40

Finding the Fourth Proportional to 85,785.24, 128,695.04 and 29,627.40

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Solution

The fourth proportional to 85,785.24, 128,695.04 and 29,627.40 is: 44,447.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,785.24 : 128,695.04 = 29,627.40 : x
  2. Step 2: Convert to fraction form
    85,785.24/128,695.04 = 29,627.40/x
  3. Step 3: Cross multiply
    85,785.24x = 128,695.04 × 29,627.40
  4. Step 4: Simplify right side
    85,785.24x = 3,812,899,279.96
  5. Step 5: Solve for x
    x = 3,812,899,279.96/85,785.24
  6. Step 6: Final answer
    x = 44,447.03

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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.