Home / 86,617.98-129,822.33-42,178.14

Finding the Fourth Proportional to 86,617.98, 129,822.33 and 42,178.14

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Solution

The fourth proportional to 86,617.98, 129,822.33 and 42,178.14 is: 63,216.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,617.98 : 129,822.33 = 42,178.14 : x
  2. Step 2: Convert to fraction form
    86,617.98/129,822.33 = 42,178.14/x
  3. Step 3: Cross multiply
    86,617.98x = 129,822.33 × 42,178.14
  4. Step 4: Simplify right side
    86,617.98x = 5,475,664,409.87
  5. Step 5: Solve for x
    x = 5,475,664,409.87/86,617.98
  6. Step 6: Final answer
    x = 63,216.26

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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.