Home / 69,000.56-103,238.40-42,639.92

Finding the Fourth Proportional to 69,000.56, 103,238.40 and 42,639.92

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Solution

The fourth proportional to 69,000.56, 103,238.40 and 42,639.92 is: 63,797.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,000.56 : 103,238.40 = 42,639.92 : x
  2. Step 2: Convert to fraction form
    69,000.56/103,238.40 = 42,639.92/x
  3. Step 3: Cross multiply
    69,000.56x = 103,238.40 × 42,639.92
  4. Step 4: Simplify right side
    69,000.56x = 4,402,077,116.93
  5. Step 5: Solve for x
    x = 4,402,077,116.93/69,000.56
  6. Step 6: Final answer
    x = 63,797.70

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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.