Home / 87,312.31-130,969.20-47,847.91

Finding the Fourth Proportional to 87,312.31, 130,969.20 and 47,847.91

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Solution

The fourth proportional to 87,312.31, 130,969.20 and 47,847.91 is: 71,772.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,312.31 : 130,969.20 = 47,847.91 : x
  2. Step 2: Convert to fraction form
    87,312.31/130,969.20 = 47,847.91/x
  3. Step 3: Cross multiply
    87,312.31x = 130,969.20 × 47,847.91
  4. Step 4: Simplify right side
    87,312.31x = 6,266,602,494.37
  5. Step 5: Solve for x
    x = 6,266,602,494.37/87,312.31
  6. Step 6: Final answer
    x = 71,772.27

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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.