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Finding the Fourth Proportional to 48,840, 67,349.76 and 39,858.56

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Solution

The fourth proportional to 48,840, 67,349.76 and 39,858.56 is: 54,964.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,840 : 67,349.76 = 39,858.56 : x
  2. Step 2: Convert to fraction form
    48,840/67,349.76 = 39,858.56/x
  3. Step 3: Cross multiply
    48,840x = 67,349.76 × 39,858.56
  4. Step 4: Simplify right side
    48,840x = 2,684,464,449.95
  5. Step 5: Solve for x
    x = 2,684,464,449.95/48,840
  6. Step 6: Final answer
    x = 54,964.46

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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.