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Finding the Fourth Proportional to 53,312.44, 79,979.94 and 20,032.79

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Solution

The fourth proportional to 53,312.44, 79,979.94 and 20,032.79 is: 30,053.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,312.44 : 79,979.94 = 20,032.79 : x
  2. Step 2: Convert to fraction form
    53,312.44/79,979.94 = 20,032.79/x
  3. Step 3: Cross multiply
    53,312.44x = 79,979.94 × 20,032.79
  4. Step 4: Simplify right side
    53,312.44x = 1,602,221,485.84
  5. Step 5: Solve for x
    x = 1,602,221,485.84/53,312.44
  6. Step 6: Final answer
    x = 30,053.43

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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.