Home / 77,692.11-107,621.18-76,117.47

Finding the Fourth Proportional to 77,692.11, 107,621.18 and 76,117.47

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Solution

The fourth proportional to 77,692.11, 107,621.18 and 76,117.47 is: 105,439.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,692.11 : 107,621.18 = 76,117.47 : x
  2. Step 2: Convert to fraction form
    77,692.11/107,621.18 = 76,117.47/x
  3. Step 3: Cross multiply
    77,692.11x = 107,621.18 × 76,117.47
  4. Step 4: Simplify right side
    77,692.11x = 8,191,851,559.43
  5. Step 5: Solve for x
    x = 8,191,851,559.43/77,692.11
  6. Step 6: Final answer
    x = 105,439.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.