Home / 77,271.40-115,842.30-40,335.40

Finding the Fourth Proportional to 77,271.40, 115,842.30 and 40,335.40

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Solution

The fourth proportional to 77,271.40, 115,842.30 and 40,335.40 is: 60,469.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,271.40 : 115,842.30 = 40,335.40 : x
  2. Step 2: Convert to fraction form
    77,271.40/115,842.30 = 40,335.40/x
  3. Step 3: Cross multiply
    77,271.40x = 115,842.30 × 40,335.40
  4. Step 4: Simplify right side
    77,271.40x = 4,672,545,507.42
  5. Step 5: Solve for x
    x = 4,672,545,507.42/77,271.40
  6. Step 6: Final answer
    x = 60,469.27

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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.