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Finding the Fourth Proportional to 63,438.34, 87,538.52 and 35,138.74

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Solution

The fourth proportional to 63,438.34, 87,538.52 and 35,138.74 is: 48,487.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,438.34 : 87,538.52 = 35,138.74 : x
  2. Step 2: Convert to fraction form
    63,438.34/87,538.52 = 35,138.74/x
  3. Step 3: Cross multiply
    63,438.34x = 87,538.52 × 35,138.74
  4. Step 4: Simplify right side
    63,438.34x = 3,075,993,294.26
  5. Step 5: Solve for x
    x = 3,075,993,294.26/63,438.34
  6. Step 6: Final answer
    x = 48,487.92

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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.