Home / 86,922.40-130,383.60-31,511.20

Finding the Fourth Proportional to 86,922.40, 130,383.60 and 31,511.20

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Solution

The fourth proportional to 86,922.40, 130,383.60 and 31,511.20 is: 47,266.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,922.40 : 130,383.60 = 31,511.20 : x
  2. Step 2: Convert to fraction form
    86,922.40/130,383.60 = 31,511.20/x
  3. Step 3: Cross multiply
    86,922.40x = 130,383.60 × 31,511.20
  4. Step 4: Simplify right side
    86,922.40x = 4,108,543,696.32
  5. Step 5: Solve for x
    x = 4,108,543,696.32/86,922.40
  6. Step 6: Final answer
    x = 47,266.80

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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.