Home / 86,678.33-130,017.50-30,505.21

Finding the Fourth Proportional to 86,678.33, 130,017.50 and 30,505.21

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Solution

The fourth proportional to 86,678.33, 130,017.50 and 30,505.21 is: 45,757.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,678.33 : 130,017.50 = 30,505.21 : x
  2. Step 2: Convert to fraction form
    86,678.33/130,017.50 = 30,505.21/x
  3. Step 3: Cross multiply
    86,678.33x = 130,017.50 × 30,505.21
  4. Step 4: Simplify right side
    86,678.33x = 3,966,210,988.65
  5. Step 5: Solve for x
    x = 3,966,210,988.65/86,678.33
  6. Step 6: Final answer
    x = 45,757.82

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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.