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Finding the Fourth Proportional to 78,528.48, 108,357.12 and 44,988

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Solution

The fourth proportional to 78,528.48, 108,357.12 and 44,988 is: 62,076.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,528.48 : 108,357.12 = 44,988 : x
  2. Step 2: Convert to fraction form
    78,528.48/108,357.12 = 44,988/x
  3. Step 3: Cross multiply
    78,528.48x = 108,357.12 × 44,988
  4. Step 4: Simplify right side
    78,528.48x = 4,874,770,114.56
  5. Step 5: Solve for x
    x = 4,874,770,114.56/78,528.48
  6. Step 6: Final answer
    x = 62,076.46

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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.