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Finding the Fourth Proportional to 52,641.70, 78,940.08 and 30,470.38

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Solution

The fourth proportional to 52,641.70, 78,940.08 and 30,470.38 is: 45,692.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,641.70 : 78,940.08 = 30,470.38 : x
  2. Step 2: Convert to fraction form
    52,641.70/78,940.08 = 30,470.38/x
  3. Step 3: Cross multiply
    52,641.70x = 78,940.08 × 30,470.38
  4. Step 4: Simplify right side
    52,641.70x = 2,405,334,395.82
  5. Step 5: Solve for x
    x = 2,405,334,395.82/52,641.70
  6. Step 6: Final answer
    x = 45,692.56

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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.