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Finding the Fourth Proportional to 69,762.59, 104,641.54 and 30,319.71

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Solution

The fourth proportional to 69,762.59, 104,641.54 and 30,319.71 is: 45,478.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,762.59 : 104,641.54 = 30,319.71 : x
  2. Step 2: Convert to fraction form
    69,762.59/104,641.54 = 30,319.71/x
  3. Step 3: Cross multiply
    69,762.59x = 104,641.54 × 30,319.71
  4. Step 4: Simplify right side
    69,762.59x = 3,172,701,146.75
  5. Step 5: Solve for x
    x = 3,172,701,146.75/69,762.59
  6. Step 6: Final answer
    x = 45,478.55

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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.