Home / 85,891.14-128,845.53-29,731.16

Finding the Fourth Proportional to 85,891.14, 128,845.53 and 29,731.16

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Solution

The fourth proportional to 85,891.14, 128,845.53 and 29,731.16 is: 44,599.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,891.14 : 128,845.53 = 29,731.16 : x
  2. Step 2: Convert to fraction form
    85,891.14/128,845.53 = 29,731.16/x
  3. Step 3: Cross multiply
    85,891.14x = 128,845.53 × 29,731.16
  4. Step 4: Simplify right side
    85,891.14x = 3,830,727,067.71
  5. Step 5: Solve for x
    x = 3,830,727,067.71/85,891.14
  6. Step 6: Final answer
    x = 44,599.79

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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.