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Finding the Fourth Proportional to 105,630.75, 145,770.44 and 57,885.98

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Solution

The fourth proportional to 105,630.75, 145,770.44 and 57,885.98 is: 79,882.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,630.75 : 145,770.44 = 57,885.98 : x
  2. Step 2: Convert to fraction form
    105,630.75/145,770.44 = 57,885.98/x
  3. Step 3: Cross multiply
    105,630.75x = 145,770.44 × 57,885.98
  4. Step 4: Simplify right side
    105,630.75x = 8,438,063,756.15
  5. Step 5: Solve for x
    x = 8,438,063,756.15/105,630.75
  6. Step 6: Final answer
    x = 79,882.65

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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.