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Finding the Fourth Proportional to 63,165.70, 87,168.82 and 34,485.40

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Solution

The fourth proportional to 63,165.70, 87,168.82 and 34,485.40 is: 47,589.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,165.70 : 87,168.82 = 34,485.40 : x
  2. Step 2: Convert to fraction form
    63,165.70/87,168.82 = 34,485.40/x
  3. Step 3: Cross multiply
    63,165.70x = 87,168.82 × 34,485.40
  4. Step 4: Simplify right side
    63,165.70x = 3,006,051,189.38
  5. Step 5: Solve for x
    x = 3,006,051,189.38/63,165.70
  6. Step 6: Final answer
    x = 47,589.93

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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.