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Finding the Fourth Proportional to 70,436.80, 105,460.80 and 54,884.80

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Solution

The fourth proportional to 70,436.80, 105,460.80 and 54,884.80 is: 82,175.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,436.80 : 105,460.80 = 54,884.80 : x
  2. Step 2: Convert to fraction form
    70,436.80/105,460.80 = 54,884.80/x
  3. Step 3: Cross multiply
    70,436.80x = 105,460.80 × 54,884.80
  4. Step 4: Simplify right side
    70,436.80x = 5,788,194,915.84
  5. Step 5: Solve for x
    x = 5,788,194,915.84/70,436.80
  6. Step 6: Final answer
    x = 82,175.72

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1.5x scale

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.