Home / 85,839.21-128,753.17-29,666.25

Finding the Fourth Proportional to 85,839.21, 128,753.17 and 29,666.25

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Solution

The fourth proportional to 85,839.21, 128,753.17 and 29,666.25 is: 44,497.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,839.21 : 128,753.17 = 29,666.25 : x
  2. Step 2: Convert to fraction form
    85,839.21/128,753.17 = 29,666.25/x
  3. Step 3: Cross multiply
    85,839.21x = 128,753.17 × 29,666.25
  4. Step 4: Simplify right side
    85,839.21x = 3,819,623,729.51
  5. Step 5: Solve for x
    x = 3,819,623,729.51/85,839.21
  6. Step 6: Final answer
    x = 44,497.42

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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.