Home / 86,148.06-129,222.63-26,979.18

Finding the Fourth Proportional to 86,148.06, 129,222.63 and 26,979.18

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Solution

The fourth proportional to 86,148.06, 129,222.63 and 26,979.18 is: 40,468.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,148.06 : 129,222.63 = 26,979.18 : x
  2. Step 2: Convert to fraction form
    86,148.06/129,222.63 = 26,979.18/x
  3. Step 3: Cross multiply
    86,148.06x = 129,222.63 × 26,979.18
  4. Step 4: Simplify right side
    86,148.06x = 3,486,320,594.84
  5. Step 5: Solve for x
    x = 3,486,320,594.84/86,148.06
  6. Step 6: Final answer
    x = 40,468.94

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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.