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Finding the Fourth Proportional to 70,274.56, 96,978.90 and 38,443.68

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Solution

The fourth proportional to 70,274.56, 96,978.90 and 38,443.68 is: 53,052.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,274.56 : 96,978.90 = 38,443.68 : x
  2. Step 2: Convert to fraction form
    70,274.56/96,978.90 = 38,443.68/x
  3. Step 3: Cross multiply
    70,274.56x = 96,978.90 × 38,443.68
  4. Step 4: Simplify right side
    70,274.56x = 3,728,225,798.35
  5. Step 5: Solve for x
    x = 3,728,225,798.35/70,274.56
  6. Step 6: Final answer
    x = 53,052.28

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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.