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Finding the Fourth Proportional to 79,455.58, 109,621.54 and 45,451.68

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Solution

The fourth proportional to 79,455.58, 109,621.54 and 45,451.68 is: 62,707.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,455.58 : 109,621.54 = 45,451.68 : x
  2. Step 2: Convert to fraction form
    79,455.58/109,621.54 = 45,451.68/x
  3. Step 3: Cross multiply
    79,455.58x = 109,621.54 × 45,451.68
  4. Step 4: Simplify right side
    79,455.58x = 4,982,483,157.19
  5. Step 5: Solve for x
    x = 4,982,483,157.19/79,455.58
  6. Step 6: Final answer
    x = 62,707.78

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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.