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Finding the Fourth Proportional to 79,311.63, 109,459.77 and 45,777.63

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Solution

The fourth proportional to 79,311.63, 109,459.77 and 45,777.63 is: 63,178.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,311.63 : 109,459.77 = 45,777.63 : x
  2. Step 2: Convert to fraction form
    79,311.63/109,459.77 = 45,777.63/x
  3. Step 3: Cross multiply
    79,311.63x = 109,459.77 × 45,777.63
  4. Step 4: Simplify right side
    79,311.63x = 5,010,808,850.95
  5. Step 5: Solve for x
    x = 5,010,808,850.95/79,311.63
  6. Step 6: Final answer
    x = 63,178.74

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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.