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Finding the Fourth Proportional to 79,490.79, 109,698.57 and 45,499.14

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Solution

The fourth proportional to 79,490.79, 109,698.57 and 45,499.14 is: 62,789.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,490.79 : 109,698.57 = 45,499.14 : x
  2. Step 2: Convert to fraction form
    79,490.79/109,698.57 = 45,499.14/x
  3. Step 3: Cross multiply
    79,490.79x = 109,698.57 × 45,499.14
  4. Step 4: Simplify right side
    79,490.79x = 4,991,190,594.23
  5. Step 5: Solve for x
    x = 4,991,190,594.23/79,490.79
  6. Step 6: Final answer
    x = 62,789.55

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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.