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Finding the Fourth Proportional to 53,712.71, 80,569.10 and 20,425.08

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Solution

The fourth proportional to 53,712.71, 80,569.10 and 20,425.08 is: 30,637.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,712.71 : 80,569.10 = 20,425.08 : x
  2. Step 2: Convert to fraction form
    53,712.71/80,569.10 = 20,425.08/x
  3. Step 3: Cross multiply
    53,712.71x = 80,569.10 × 20,425.08
  4. Step 4: Simplify right side
    53,712.71x = 1,645,630,313.03
  5. Step 5: Solve for x
    x = 1,645,630,313.03/53,712.71
  6. Step 6: Final answer
    x = 30,637.63

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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.