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Finding the Fourth Proportional to 69,071.79, 103,607.67 and 45,692.76

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Solution

The fourth proportional to 69,071.79, 103,607.67 and 45,692.76 is: 68,539.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,071.79 : 103,607.67 = 45,692.76 : x
  2. Step 2: Convert to fraction form
    69,071.79/103,607.67 = 45,692.76/x
  3. Step 3: Cross multiply
    69,071.79x = 103,607.67 × 45,692.76
  4. Step 4: Simplify right side
    69,071.79x = 4,734,120,399.47
  5. Step 5: Solve for x
    x = 4,734,120,399.47/69,071.79
  6. Step 6: Final answer
    x = 68,539.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.