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Finding the Fourth Proportional to 70,126.32, 96,770.37 and 39,918.99

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Solution

The fourth proportional to 70,126.32, 96,770.37 and 39,918.99 is: 55,085.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,126.32 : 96,770.37 = 39,918.99 : x
  2. Step 2: Convert to fraction form
    70,126.32/96,770.37 = 39,918.99/x
  3. Step 3: Cross multiply
    70,126.32x = 96,770.37 × 39,918.99
  4. Step 4: Simplify right side
    70,126.32x = 3,862,975,432.33
  5. Step 5: Solve for x
    x = 3,862,975,432.33/70,126.32
  6. Step 6: Final answer
    x = 55,085.96

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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.