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Finding the Fourth Proportional to 86,323.61, 129,485.13 and 38,883.18

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Solution

The fourth proportional to 86,323.61, 129,485.13 and 38,883.18 is: 58,324.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,323.61 : 129,485.13 = 38,883.18 : x
  2. Step 2: Convert to fraction form
    86,323.61/129,485.13 = 38,883.18/x
  3. Step 3: Cross multiply
    86,323.61x = 129,485.13 × 38,883.18
  4. Step 4: Simplify right side
    86,323.61x = 5,034,793,617.11
  5. Step 5: Solve for x
    x = 5,034,793,617.11/86,323.61
  6. Step 6: Final answer
    x = 58,324.64

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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.