Home / 86,918.40-130,377.60-55,814.40

Finding the Fourth Proportional to 86,918.40, 130,377.60 and 55,814.40

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Solution

The fourth proportional to 86,918.40, 130,377.60 and 55,814.40 is: 83,721.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,918.40 : 130,377.60 = 55,814.40 : x
  2. Step 2: Convert to fraction form
    86,918.40/130,377.60 = 55,814.40/x
  3. Step 3: Cross multiply
    86,918.40x = 130,377.60 × 55,814.40
  4. Step 4: Simplify right side
    86,918.40x = 7,276,947,517.44
  5. Step 5: Solve for x
    x = 7,276,947,517.44/86,918.40
  6. Step 6: Final answer
    x = 83,721.60

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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.