Home / 67,316.67-100,779.39-39,150.81

Finding the Fourth Proportional to 67,316.67, 100,779.39 and 39,150.81

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Solution

The fourth proportional to 67,316.67, 100,779.39 and 39,150.81 is: 58,612.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,316.67 : 100,779.39 = 39,150.81 : x
  2. Step 2: Convert to fraction form
    67,316.67/100,779.39 = 39,150.81/x
  3. Step 3: Cross multiply
    67,316.67x = 100,779.39 × 39,150.81
  4. Step 4: Simplify right side
    67,316.67x = 3,945,594,749.81
  5. Step 5: Solve for x
    x = 3,945,594,749.81/67,316.67
  6. Step 6: Final answer
    x = 58,612.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.