Home / 70,239.42-96,939.90-39,618.80

Finding the Fourth Proportional to 70,239.42, 96,939.90 and 39,618.80

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Solution

The fourth proportional to 70,239.42, 96,939.90 and 39,618.80 is: 54,679.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,239.42 : 96,939.90 = 39,618.80 : x
  2. Step 2: Convert to fraction form
    70,239.42/96,939.90 = 39,618.80/x
  3. Step 3: Cross multiply
    70,239.42x = 96,939.90 × 39,618.80
  4. Step 4: Simplify right side
    70,239.42x = 3,840,641,921.30
  5. Step 5: Solve for x
    x = 3,840,641,921.30/70,239.42
  6. Step 6: Final answer
    x = 54,679.30

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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.