Home / 86,984.56-130,255.30-57,312.46

Finding the Fourth Proportional to 86,984.56, 130,255.30 and 57,312.46

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Solution

The fourth proportional to 86,984.56, 130,255.30 and 57,312.46 is: 85,822.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,984.56 : 130,255.30 = 57,312.46 : x
  2. Step 2: Convert to fraction form
    86,984.56/130,255.30 = 57,312.46/x
  3. Step 3: Cross multiply
    86,984.56x = 130,255.30 × 57,312.46
  4. Step 4: Simplify right side
    86,984.56x = 7,465,251,671.04
  5. Step 5: Solve for x
    x = 7,465,251,671.04/86,984.56
  6. Step 6: Final answer
    x = 85,822.72

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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.