Home / 86,918.80-130,416.60-40,147.60

Finding the Fourth Proportional to 86,918.80, 130,416.60 and 40,147.60

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Solution

The fourth proportional to 86,918.80, 130,416.60 and 40,147.60 is: 60,239.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,918.80 : 130,416.60 = 40,147.60 : x
  2. Step 2: Convert to fraction form
    86,918.80/130,416.60 = 40,147.60/x
  3. Step 3: Cross multiply
    86,918.80x = 130,416.60 × 40,147.60
  4. Step 4: Simplify right side
    86,918.80x = 5,235,913,490.16
  5. Step 5: Solve for x
    x = 5,235,913,490.16/86,918.80
  6. Step 6: Final answer
    x = 60,239.14

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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.