Home / 86,057.27-129,041.34-38,631.51

Finding the Fourth Proportional to 86,057.27, 129,041.34 and 38,631.51

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Solution

The fourth proportional to 86,057.27, 129,041.34 and 38,631.51 is: 57,927.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,057.27 : 129,041.34 = 38,631.51 : x
  2. Step 2: Convert to fraction form
    86,057.27/129,041.34 = 38,631.51/x
  3. Step 3: Cross multiply
    86,057.27x = 129,041.34 × 38,631.51
  4. Step 4: Simplify right side
    86,057.27x = 4,985,061,671.76
  5. Step 5: Solve for x
    x = 4,985,061,671.76/86,057.27
  6. Step 6: Final answer
    x = 57,927.26

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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.