Home / 79,640.08-109,901.10-45,191.09

Finding the Fourth Proportional to 79,640.08, 109,901.10 and 45,191.09

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Solution

The fourth proportional to 79,640.08, 109,901.10 and 45,191.09 is: 62,362.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,640.08 : 109,901.10 = 45,191.09 : x
  2. Step 2: Convert to fraction form
    79,640.08/109,901.10 = 45,191.09/x
  3. Step 3: Cross multiply
    79,640.08x = 109,901.10 × 45,191.09
  4. Step 4: Simplify right side
    79,640.08x = 4,966,549,951.69
  5. Step 5: Solve for x
    x = 4,966,549,951.69/79,640.08
  6. Step 6: Final answer
    x = 62,362.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.