Home / 86,739.40-130,109.10-53,351.20

Finding the Fourth Proportional to 86,739.40, 130,109.10 and 53,351.20

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Solution

The fourth proportional to 86,739.40, 130,109.10 and 53,351.20 is: 80,026.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,739.40 : 130,109.10 = 53,351.20 : x
  2. Step 2: Convert to fraction form
    86,739.40/130,109.10 = 53,351.20/x
  3. Step 3: Cross multiply
    86,739.40x = 130,109.10 × 53,351.20
  4. Step 4: Simplify right side
    86,739.40x = 6,941,476,615.92
  5. Step 5: Solve for x
    x = 6,941,476,615.92/86,739.40
  6. Step 6: Final answer
    x = 80,026.80

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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.