Home / 86,587.84-129,618.72-55,444.96

Finding the Fourth Proportional to 86,587.84, 129,618.72 and 55,444.96

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Solution

The fourth proportional to 86,587.84, 129,618.72 and 55,444.96 is: 82,999.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,587.84 : 129,618.72 = 55,444.96 : x
  2. Step 2: Convert to fraction form
    86,587.84/129,618.72 = 55,444.96/x
  3. Step 3: Cross multiply
    86,587.84x = 129,618.72 × 55,444.96
  4. Step 4: Simplify right side
    86,587.84x = 7,186,704,745.65
  5. Step 5: Solve for x
    x = 7,186,704,745.65/86,587.84
  6. Step 6: Final answer
    x = 82,999.01

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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.