Home / 53,668.78-80,500.60-20,386.25

Finding the Fourth Proportional to 53,668.78, 80,500.60 and 20,386.25

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Solution

The fourth proportional to 53,668.78, 80,500.60 and 20,386.25 is: 30,578.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,668.78 : 80,500.60 = 20,386.25 : x
  2. Step 2: Convert to fraction form
    53,668.78/80,500.60 = 20,386.25/x
  3. Step 3: Cross multiply
    53,668.78x = 80,500.60 × 20,386.25
  4. Step 4: Simplify right side
    53,668.78x = 1,641,105,281.61
  5. Step 5: Solve for x
    x = 1,641,105,281.61/53,668.78
  6. Step 6: Final answer
    x = 30,578.40

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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.