Home / 68,730.15-103,111.35-21,342.79

Finding the Fourth Proportional to 68,730.15, 103,111.35 and 21,342.79

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Solution

The fourth proportional to 68,730.15, 103,111.35 and 21,342.79 is: 32,019.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,730.15 : 103,111.35 = 21,342.79 : x
  2. Step 2: Convert to fraction form
    68,730.15/103,111.35 = 21,342.79/x
  3. Step 3: Cross multiply
    68,730.15x = 103,111.35 × 21,342.79
  4. Step 4: Simplify right side
    68,730.15x = 2,200,684,118.60
  5. Step 5: Solve for x
    x = 2,200,684,118.60/68,730.15
  6. Step 6: Final answer
    x = 32,019.20

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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.