Home / 70,736.40-97,615.20-38,905.04

Finding the Fourth Proportional to 70,736.40, 97,615.20 and 38,905.04

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Solution

The fourth proportional to 70,736.40, 97,615.20 and 38,905.04 is: 53,688.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,736.40 : 97,615.20 = 38,905.04 : x
  2. Step 2: Convert to fraction form
    70,736.40/97,615.20 = 38,905.04/x
  3. Step 3: Cross multiply
    70,736.40x = 97,615.20 × 38,905.04
  4. Step 4: Simplify right side
    70,736.40x = 3,797,723,260.61
  5. Step 5: Solve for x
    x = 3,797,723,260.61/70,736.40
  6. Step 6: Final answer
    x = 53,688.39

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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.