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Finding the Fourth Proportional to 85,433.44, 128,060.96 and 29,256.96

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Solution

The fourth proportional to 85,433.44, 128,060.96 and 29,256.96 is: 43,854.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,433.44 : 128,060.96 = 29,256.96 : x
  2. Step 2: Convert to fraction form
    85,433.44/128,060.96 = 29,256.96/x
  3. Step 3: Cross multiply
    85,433.44x = 128,060.96 × 29,256.96
  4. Step 4: Simplify right side
    85,433.44x = 3,746,674,384.28
  5. Step 5: Solve for x
    x = 3,746,674,384.28/85,433.44
  6. Step 6: Final answer
    x = 43,854.89

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1.5x scale

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.