Home / 86,920.40-130,342.20-40,187.60

Finding the Fourth Proportional to 86,920.40, 130,342.20 and 40,187.60

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Solution

The fourth proportional to 86,920.40, 130,342.20 and 40,187.60 is: 60,263.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,920.40 : 130,342.20 = 40,187.60 : x
  2. Step 2: Convert to fraction form
    86,920.40/130,342.20 = 40,187.60/x
  3. Step 3: Cross multiply
    86,920.40x = 130,342.20 × 40,187.60
  4. Step 4: Simplify right side
    86,920.40x = 5,238,140,196.72
  5. Step 5: Solve for x
    x = 5,238,140,196.72/86,920.40
  6. Step 6: Final answer
    x = 60,263.65

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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.