Home / 86,827.10-130,240.65-31,415.90

Finding the Fourth Proportional to 86,827.10, 130,240.65 and 31,415.90

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Solution

The fourth proportional to 86,827.10, 130,240.65 and 31,415.90 is: 47,123.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,827.10 : 130,240.65 = 31,415.90 : x
  2. Step 2: Convert to fraction form
    86,827.10/130,240.65 = 31,415.90/x
  3. Step 3: Cross multiply
    86,827.10x = 130,240.65 × 31,415.90
  4. Step 4: Simplify right side
    86,827.10x = 4,091,627,236.34
  5. Step 5: Solve for x
    x = 4,091,627,236.34/86,827.10
  6. Step 6: Final answer
    x = 47,123.85

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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.