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Finding the Fourth Proportional to 69,017.91, 103,658.09 and 42,905.13

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Solution

The fourth proportional to 69,017.91, 103,658.09 and 42,905.13 is: 64,439.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,017.91 : 103,658.09 = 42,905.13 : x
  2. Step 2: Convert to fraction form
    69,017.91/103,658.09 = 42,905.13/x
  3. Step 3: Cross multiply
    69,017.91x = 103,658.09 × 42,905.13
  4. Step 4: Simplify right side
    69,017.91x = 4,447,463,827.00
  5. Step 5: Solve for x
    x = 4,447,463,827.00/69,017.91
  6. Step 6: Final answer
    x = 64,439.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.