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Finding the Fourth Proportional to 69,881.32, 96,496.16 and 67,621.80

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Solution

The fourth proportional to 69,881.32, 96,496.16 and 67,621.80 is: 93,376.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,881.32 : 96,496.16 = 67,621.80 : x
  2. Step 2: Convert to fraction form
    69,881.32/96,496.16 = 67,621.80/x
  3. Step 3: Cross multiply
    69,881.32x = 96,496.16 × 67,621.80
  4. Step 4: Simplify right side
    69,881.32x = 6,525,244,032.29
  5. Step 5: Solve for x
    x = 6,525,244,032.29/69,881.32
  6. Step 6: Final answer
    x = 93,376.08

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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.