Home / 86,965.40-130,296.90-40,122.20

Finding the Fourth Proportional to 86,965.40, 130,296.90 and 40,122.20

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Solution

The fourth proportional to 86,965.40, 130,296.90 and 40,122.20 is: 60,113.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,965.40 : 130,296.90 = 40,122.20 : x
  2. Step 2: Convert to fraction form
    86,965.40/130,296.90 = 40,122.20/x
  3. Step 3: Cross multiply
    86,965.40x = 130,296.90 × 40,122.20
  4. Step 4: Simplify right side
    86,965.40x = 5,227,798,281.18
  5. Step 5: Solve for x
    x = 5,227,798,281.18/86,965.40
  6. Step 6: Final answer
    x = 60,113.54

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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.