Home / 86,919.90-130,228.65-40,076.70

Finding the Fourth Proportional to 86,919.90, 130,228.65 and 40,076.70

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Solution

The fourth proportional to 86,919.90, 130,228.65 and 40,076.70 is: 60,045.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,919.90 : 130,228.65 = 40,076.70 : x
  2. Step 2: Convert to fraction form
    86,919.90/130,228.65 = 40,076.70/x
  3. Step 3: Cross multiply
    86,919.90x = 130,228.65 × 40,076.70
  4. Step 4: Simplify right side
    86,919.90x = 5,219,134,537.46
  5. Step 5: Solve for x
    x = 5,219,134,537.46/86,919.90
  6. Step 6: Final answer
    x = 60,045.34

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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.