Home / 72,479.48-100,022.38-40,647.69

Finding the Fourth Proportional to 72,479.48, 100,022.38 and 40,647.69

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Solution

The fourth proportional to 72,479.48, 100,022.38 and 40,647.69 is: 56,094.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,479.48 : 100,022.38 = 40,647.69 : x
  2. Step 2: Convert to fraction form
    72,479.48/100,022.38 = 40,647.69/x
  3. Step 3: Cross multiply
    72,479.48x = 100,022.38 × 40,647.69
  4. Step 4: Simplify right side
    72,479.48x = 4,065,678,593.68
  5. Step 5: Solve for x
    x = 4,065,678,593.68/72,479.48
  6. Step 6: Final answer
    x = 56,094.21

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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.