Home / 70,954.20-97,917-39,122.40

Finding the Fourth Proportional to 70,954.20, 97,917 and 39,122.40

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Solution

The fourth proportional to 70,954.20, 97,917 and 39,122.40 is: 53,989.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,954.20 : 97,917 = 39,122.40 : x
  2. Step 2: Convert to fraction form
    70,954.20/97,917 = 39,122.40/x
  3. Step 3: Cross multiply
    70,954.20x = 97,917 × 39,122.40
  4. Step 4: Simplify right side
    70,954.20x = 3,830,748,040.80
  5. Step 5: Solve for x
    x = 3,830,748,040.80/70,954.20
  6. Step 6: Final answer
    x = 53,989.02

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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.