Home / 53,678.40-80,531.52-20,399.04

Finding the Fourth Proportional to 53,678.40, 80,531.52 and 20,399.04

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Solution

The fourth proportional to 53,678.40, 80,531.52 and 20,399.04 is: 30,603.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,678.40 : 80,531.52 = 20,399.04 : x
  2. Step 2: Convert to fraction form
    53,678.40/80,531.52 = 20,399.04/x
  3. Step 3: Cross multiply
    53,678.40x = 80,531.52 × 20,399.04
  4. Step 4: Simplify right side
    53,678.40x = 1,642,765,697.74
  5. Step 5: Solve for x
    x = 1,642,765,697.74/53,678.40
  6. Step 6: Final answer
    x = 30,603.85

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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.