Home / 70,778.18-97,678.24-38,954.10

Finding the Fourth Proportional to 70,778.18, 97,678.24 and 38,954.10

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Solution

The fourth proportional to 70,778.18, 97,678.24 and 38,954.10 is: 53,759.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,778.18 : 97,678.24 = 38,954.10 : x
  2. Step 2: Convert to fraction form
    70,778.18/97,678.24 = 38,954.10/x
  3. Step 3: Cross multiply
    70,778.18x = 97,678.24 × 38,954.10
  4. Step 4: Simplify right side
    70,778.18x = 3,804,967,928.78
  5. Step 5: Solve for x
    x = 3,804,967,928.78/70,778.18
  6. Step 6: Final answer
    x = 53,759.05

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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.