Home / 86,276.31-129,354.42-38,218.82

Finding the Fourth Proportional to 86,276.31, 129,354.42 and 38,218.82

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Solution

The fourth proportional to 86,276.31, 129,354.42 and 38,218.82 is: 57,301.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,276.31 : 129,354.42 = 38,218.82 : x
  2. Step 2: Convert to fraction form
    86,276.31/129,354.42 = 38,218.82/x
  3. Step 3: Cross multiply
    86,276.31x = 129,354.42 × 38,218.82
  4. Step 4: Simplify right side
    86,276.31x = 4,943,772,647.41
  5. Step 5: Solve for x
    x = 4,943,772,647.41/86,276.31
  6. Step 6: Final answer
    x = 57,301.62

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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.