Home / 53,300.25-79,950.78-18,240.21

Finding the Fourth Proportional to 53,300.25, 79,950.78 and 18,240.21

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Solution

The fourth proportional to 53,300.25, 79,950.78 and 18,240.21 is: 27,360.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,300.25 : 79,950.78 = 18,240.21 : x
  2. Step 2: Convert to fraction form
    53,300.25/79,950.78 = 18,240.21/x
  3. Step 3: Cross multiply
    53,300.25x = 79,950.78 × 18,240.21
  4. Step 4: Simplify right side
    53,300.25x = 1,458,319,016.86
  5. Step 5: Solve for x
    x = 1,458,319,016.86/53,300.25
  6. Step 6: Final answer
    x = 27,360.45

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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.