Home / 71,108.20-106,682.08-31,120.06

Finding the Fourth Proportional to 71,108.20, 106,682.08 and 31,120.06

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Solution

The fourth proportional to 71,108.20, 106,682.08 and 31,120.06 is: 46,688.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,108.20 : 106,682.08 = 31,120.06 : x
  2. Step 2: Convert to fraction form
    71,108.20/106,682.08 = 31,120.06/x
  3. Step 3: Cross multiply
    71,108.20x = 106,682.08 × 31,120.06
  4. Step 4: Simplify right side
    71,108.20x = 3,319,952,730.52
  5. Step 5: Solve for x
    x = 3,319,952,730.52/71,108.20
  6. Step 6: Final answer
    x = 46,688.75

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1.5x scale

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.