Home / 87,001.60-130,518.72-30,072.64

Finding the Fourth Proportional to 87,001.60, 130,518.72 and 30,072.64

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Solution

The fourth proportional to 87,001.60, 130,518.72 and 30,072.64 is: 45,114.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,001.60 : 130,518.72 = 30,072.64 : x
  2. Step 2: Convert to fraction form
    87,001.60/130,518.72 = 30,072.64/x
  3. Step 3: Cross multiply
    87,001.60x = 130,518.72 × 30,072.64
  4. Step 4: Simplify right side
    87,001.60x = 3,925,042,479.82
  5. Step 5: Solve for x
    x = 3,925,042,479.82/87,001.60
  6. Step 6: Final answer
    x = 45,114.60

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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.