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Finding the Fourth Proportional to 86,703.75, 130,081.85 and 61,452.10

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Solution

The fourth proportional to 86,703.75, 130,081.85 and 61,452.10 is: 92,196.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,703.75 : 130,081.85 = 61,452.10 : x
  2. Step 2: Convert to fraction form
    86,703.75/130,081.85 = 61,452.10/x
  3. Step 3: Cross multiply
    86,703.75x = 130,081.85 × 61,452.10
  4. Step 4: Simplify right side
    86,703.75x = 7,993,802,940.17
  5. Step 5: Solve for x
    x = 7,993,802,940.17/86,703.75
  6. Step 6: Final answer
    x = 92,196.74

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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.