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Finding the Fourth Proportional to 69,878.76, 96,431.44 and 38,047.08

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Solution

The fourth proportional to 69,878.76, 96,431.44 and 38,047.08 is: 52,504.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,878.76 : 96,431.44 = 38,047.08 : x
  2. Step 2: Convert to fraction form
    69,878.76/96,431.44 = 38,047.08/x
  3. Step 3: Cross multiply
    69,878.76x = 96,431.44 × 38,047.08
  4. Step 4: Simplify right side
    69,878.76x = 3,668,934,712.20
  5. Step 5: Solve for x
    x = 3,668,934,712.20/69,878.76
  6. Step 6: Final answer
    x = 52,504.29

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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.