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Finding the Fourth Proportional to 70,180.60, 96,854.75 and 39,967.20

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Solution

The fourth proportional to 70,180.60, 96,854.75 and 39,967.20 is: 55,157.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,180.60 : 96,854.75 = 39,967.20 : x
  2. Step 2: Convert to fraction form
    70,180.60/96,854.75 = 39,967.20/x
  3. Step 3: Cross multiply
    70,180.60x = 96,854.75 × 39,967.20
  4. Step 4: Simplify right side
    70,180.60x = 3,871,013,164.20
  5. Step 5: Solve for x
    x = 3,871,013,164.20/70,180.60
  6. Step 6: Final answer
    x = 55,157.88

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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.