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Finding the Fourth Proportional to 45,879, 63,332.45 and 27,980.43

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Solution

The fourth proportional to 45,879, 63,332.45 and 27,980.43 is: 38,624.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,879 : 63,332.45 = 27,980.43 : x
  2. Step 2: Convert to fraction form
    45,879/63,332.45 = 27,980.43/x
  3. Step 3: Cross multiply
    45,879x = 63,332.45 × 27,980.43
  4. Step 4: Simplify right side
    45,879x = 1,772,069,183.95
  5. Step 5: Solve for x
    x = 1,772,069,183.95/45,879
  6. Step 6: Final answer
    x = 38,624.84

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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.