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Finding the Fourth Proportional to 37,712.79, 52,043.67 and 20,945.79

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Solution

The fourth proportional to 37,712.79, 52,043.67 and 20,945.79 is: 28,905.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,712.79 : 52,043.67 = 20,945.79 : x
  2. Step 2: Convert to fraction form
    37,712.79/52,043.67 = 20,945.79/x
  3. Step 3: Cross multiply
    37,712.79x = 52,043.67 × 20,945.79
  4. Step 4: Simplify right side
    37,712.79x = 1,090,095,782.65
  5. Step 5: Solve for x
    x = 1,090,095,782.65/37,712.79
  6. Step 6: Final answer
    x = 28,905.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.