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Finding the Fourth Proportional to 86,920.39, 130,380.59 and 55,952.47

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Solution

The fourth proportional to 86,920.39, 130,380.59 and 55,952.47 is: 83,928.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,920.39 : 130,380.59 = 55,952.47 : x
  2. Step 2: Convert to fraction form
    86,920.39/130,380.59 = 55,952.47/x
  3. Step 3: Cross multiply
    86,920.39x = 130,380.59 × 55,952.47
  4. Step 4: Simplify right side
    86,920.39x = 7,295,116,050.56
  5. Step 5: Solve for x
    x = 7,295,116,050.56/86,920.39
  6. Step 6: Final answer
    x = 83,928.71

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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.