Home / 86,977.78-130,279.20-58,742.58

Finding the Fourth Proportional to 86,977.78, 130,279.20 and 58,742.58

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Solution

The fourth proportional to 86,977.78, 130,279.20 and 58,742.58 is: 87,987.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,977.78 : 130,279.20 = 58,742.58 : x
  2. Step 2: Convert to fraction form
    86,977.78/130,279.20 = 58,742.58/x
  3. Step 3: Cross multiply
    86,977.78x = 130,279.20 × 58,742.58
  4. Step 4: Simplify right side
    86,977.78x = 7,652,936,328.34
  5. Step 5: Solve for x
    x = 7,652,936,328.34/86,977.78
  6. Step 6: Final answer
    x = 87,987.26

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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.