Home / 70,619.50-97,455-38,789.02

Finding the Fourth Proportional to 70,619.50, 97,455 and 38,789.02

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Solution

The fourth proportional to 70,619.50, 97,455 and 38,789.02 is: 53,528.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,619.50 : 97,455 = 38,789.02 : x
  2. Step 2: Convert to fraction form
    70,619.50/97,455 = 38,789.02/x
  3. Step 3: Cross multiply
    70,619.50x = 97,455 × 38,789.02
  4. Step 4: Simplify right side
    70,619.50x = 3,780,183,944.10
  5. Step 5: Solve for x
    x = 3,780,183,944.10/70,619.50
  6. Step 6: Final answer
    x = 53,528.90

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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.