Home / 86,680.74-130,011.80-58,779.89

Finding the Fourth Proportional to 86,680.74, 130,011.80 and 58,779.89

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Solution

The fourth proportional to 86,680.74, 130,011.80 and 58,779.89 is: 88,163.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,680.74 : 130,011.80 = 58,779.89 : x
  2. Step 2: Convert to fraction form
    86,680.74/130,011.80 = 58,779.89/x
  3. Step 3: Cross multiply
    86,680.74x = 130,011.80 × 58,779.89
  4. Step 4: Simplify right side
    86,680.74x = 7,642,078,358.74
  5. Step 5: Solve for x
    x = 7,642,078,358.74/86,680.74
  6. Step 6: Final answer
    x = 88,163.51

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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.