Home / 83,421.63-115,174.17-64,265.36

Finding the Fourth Proportional to 83,421.63, 115,174.17 and 64,265.36

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Solution

The fourth proportional to 83,421.63, 115,174.17 and 64,265.36 is: 88,726.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,421.63 : 115,174.17 = 64,265.36 : x
  2. Step 2: Convert to fraction form
    83,421.63/115,174.17 = 64,265.36/x
  3. Step 3: Cross multiply
    83,421.63x = 115,174.17 × 64,265.36
  4. Step 4: Simplify right side
    83,421.63x = 7,401,708,921.88
  5. Step 5: Solve for x
    x = 7,401,708,921.88/83,421.63
  6. Step 6: Final answer
    x = 88,726.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.