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Finding the Fourth Proportional to 69,678.96, 96,153.76 and 39,464.52

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Solution

The fourth proportional to 69,678.96, 96,153.76 and 39,464.52 is: 54,459.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,678.96 : 96,153.76 = 39,464.52 : x
  2. Step 2: Convert to fraction form
    69,678.96/96,153.76 = 39,464.52/x
  3. Step 3: Cross multiply
    69,678.96x = 96,153.76 × 39,464.52
  4. Step 4: Simplify right side
    69,678.96x = 3,794,661,984.60
  5. Step 5: Solve for x
    x = 3,794,661,984.60/69,678.96
  6. Step 6: Final answer
    x = 54,459.22

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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.