Home / 70,607.09-97,439.78-38,778.04

Finding the Fourth Proportional to 70,607.09, 97,439.78 and 38,778.04

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Solution

The fourth proportional to 70,607.09, 97,439.78 and 38,778.04 is: 53,514.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,607.09 : 97,439.78 = 38,778.04 : x
  2. Step 2: Convert to fraction form
    70,607.09/97,439.78 = 38,778.04/x
  3. Step 3: Cross multiply
    70,607.09x = 97,439.78 × 38,778.04
  4. Step 4: Simplify right side
    70,607.09x = 3,778,523,248.94
  5. Step 5: Solve for x
    x = 3,778,523,248.94/70,607.09
  6. Step 6: Final answer
    x = 53,514.79

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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.