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Finding the Fourth Proportional to 86,249.81, 129,374.72 and 23,920.31

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Solution

The fourth proportional to 86,249.81, 129,374.72 and 23,920.31 is: 35,880.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,249.81 : 129,374.72 = 23,920.31 : x
  2. Step 2: Convert to fraction form
    86,249.81/129,374.72 = 23,920.31/x
  3. Step 3: Cross multiply
    86,249.81x = 129,374.72 × 23,920.31
  4. Step 4: Simplify right side
    86,249.81x = 3,094,683,702.10
  5. Step 5: Solve for x
    x = 3,094,683,702.10/86,249.81
  6. Step 6: Final answer
    x = 35,880.47

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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.