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Finding the Fourth Proportional to 86,033.52, 129,065.40 and 39,291.12

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Solution

The fourth proportional to 86,033.52, 129,065.40 and 39,291.12 is: 58,943.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,033.52 : 129,065.40 = 39,291.12 : x
  2. Step 2: Convert to fraction form
    86,033.52/129,065.40 = 39,291.12/x
  3. Step 3: Cross multiply
    86,033.52x = 129,065.40 × 39,291.12
  4. Step 4: Simplify right side
    86,033.52x = 5,071,124,119.25
  5. Step 5: Solve for x
    x = 5,071,124,119.25/86,033.52
  6. Step 6: Final answer
    x = 58,943.59

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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.