Home / 87,042.32-130,621.86-55,899.44

Finding the Fourth Proportional to 87,042.32, 130,621.86 and 55,899.44

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Solution

The fourth proportional to 87,042.32, 130,621.86 and 55,899.44 is: 83,886.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,042.32 : 130,621.86 = 55,899.44 : x
  2. Step 2: Convert to fraction form
    87,042.32/130,621.86 = 55,899.44/x
  3. Step 3: Cross multiply
    87,042.32x = 130,621.86 × 55,899.44
  4. Step 4: Simplify right side
    87,042.32x = 7,301,688,825.76
  5. Step 5: Solve for x
    x = 7,301,688,825.76/87,042.32
  6. Step 6: Final answer
    x = 83,886.65

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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.