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Finding the Fourth Proportional to 78,597.81, 108,432.93 and 48,374.01

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Solution

The fourth proportional to 78,597.81, 108,432.93 and 48,374.01 is: 66,736.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,597.81 : 108,432.93 = 48,374.01 : x
  2. Step 2: Convert to fraction form
    78,597.81/108,432.93 = 48,374.01/x
  3. Step 3: Cross multiply
    78,597.81x = 108,432.93 × 48,374.01
  4. Step 4: Simplify right side
    78,597.81x = 5,245,335,640.15
  5. Step 5: Solve for x
    x = 5,245,335,640.15/78,597.81
  6. Step 6: Final answer
    x = 66,736.41

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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.