Home / 83,419.40-115,171.03-64,263.11

Finding the Fourth Proportional to 83,419.40, 115,171.03 and 64,263.11

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Solution

The fourth proportional to 83,419.40, 115,171.03 and 64,263.11 is: 88,723.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,419.40 : 115,171.03 = 64,263.11 : x
  2. Step 2: Convert to fraction form
    83,419.40/115,171.03 = 64,263.11/x
  3. Step 3: Cross multiply
    83,419.40x = 115,171.03 × 64,263.11
  4. Step 4: Simplify right side
    83,419.40x = 7,401,248,074.18
  5. Step 5: Solve for x
    x = 7,401,248,074.18/83,419.40
  6. Step 6: Final answer
    x = 88,723.34

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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.