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Finding the Fourth Proportional to 63,619.04, 87,754.56 and 40,988

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Solution

The fourth proportional to 63,619.04, 87,754.56 and 40,988 is: 56,537.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,619.04 : 87,754.56 = 40,988 : x
  2. Step 2: Convert to fraction form
    63,619.04/87,754.56 = 40,988/x
  3. Step 3: Cross multiply
    63,619.04x = 87,754.56 × 40,988
  4. Step 4: Simplify right side
    63,619.04x = 3,596,883,905.28
  5. Step 5: Solve for x
    x = 3,596,883,905.28/63,619.04
  6. Step 6: Final answer
    x = 56,537.85

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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.