Home / 72,623.10-108,934.65-66,920.70

Finding the Fourth Proportional to 72,623.10, 108,934.65 and 66,920.70

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Solution

The fourth proportional to 72,623.10, 108,934.65 and 66,920.70 is: 100,381.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,623.10 : 108,934.65 = 66,920.70 : x
  2. Step 2: Convert to fraction form
    72,623.10/108,934.65 = 66,920.70/x
  3. Step 3: Cross multiply
    72,623.10x = 108,934.65 × 66,920.70
  4. Step 4: Simplify right side
    72,623.10x = 7,289,983,032.26
  5. Step 5: Solve for x
    x = 7,289,983,032.26/72,623.10
  6. Step 6: Final answer
    x = 100,381.05

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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.