Home / 86,400.63-129,499.11-38,960.17

Finding the Fourth Proportional to 86,400.63, 129,499.11 and 38,960.17

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Solution

The fourth proportional to 86,400.63, 129,499.11 and 38,960.17 is: 58,394.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,400.63 : 129,499.11 = 38,960.17 : x
  2. Step 2: Convert to fraction form
    86,400.63/129,499.11 = 38,960.17/x
  3. Step 3: Cross multiply
    86,400.63x = 129,499.11 × 38,960.17
  4. Step 4: Simplify right side
    86,400.63x = 5,045,307,340.45
  5. Step 5: Solve for x
    x = 5,045,307,340.45/86,400.63
  6. Step 6: Final answer
    x = 58,394.34

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1.5x scale

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.