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Finding the Fourth Proportional to 85,535.64, 128,270.66 and 29,365.28

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Solution

The fourth proportional to 85,535.64, 128,270.66 and 29,365.28 is: 44,036.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,535.64 : 128,270.66 = 29,365.28 : x
  2. Step 2: Convert to fraction form
    85,535.64/128,270.66 = 29,365.28/x
  3. Step 3: Cross multiply
    85,535.64x = 128,270.66 × 29,365.28
  4. Step 4: Simplify right side
    85,535.64x = 3,766,703,846.68
  5. Step 5: Solve for x
    x = 3,766,703,846.68/85,535.64
  6. Step 6: Final answer
    x = 44,036.66

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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.