Home / 69,001.06-103,239.15-42,640.42

Finding the Fourth Proportional to 69,001.06, 103,239.15 and 42,640.42

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Solution

The fourth proportional to 69,001.06, 103,239.15 and 42,640.42 is: 63,798.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,001.06 : 103,239.15 = 42,640.42 : x
  2. Step 2: Convert to fraction form
    69,001.06/103,239.15 = 42,640.42/x
  3. Step 3: Cross multiply
    69,001.06x = 103,239.15 × 42,640.42
  4. Step 4: Simplify right side
    69,001.06x = 4,402,160,716.44
  5. Step 5: Solve for x
    x = 4,402,160,716.44/69,001.06
  6. Step 6: Final answer
    x = 63,798.45

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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.