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Finding the Fourth Proportional to 53,290.52, 79,935.78 and 15,851.13

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Solution

The fourth proportional to 53,290.52, 79,935.78 and 15,851.13 is: 23,776.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,290.52 : 79,935.78 = 15,851.13 : x
  2. Step 2: Convert to fraction form
    53,290.52/79,935.78 = 15,851.13/x
  3. Step 3: Cross multiply
    53,290.52x = 79,935.78 × 15,851.13
  4. Step 4: Simplify right side
    53,290.52x = 1,267,072,110.95
  5. Step 5: Solve for x
    x = 1,267,072,110.95/53,290.52
  6. Step 6: Final answer
    x = 23,776.69

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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.