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Finding the Fourth Proportional to 34,749.20, 52,123.80 and 20,925.20

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Solution

The fourth proportional to 34,749.20, 52,123.80 and 20,925.20 is: 31,387.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,749.20 : 52,123.80 = 20,925.20 : x
  2. Step 2: Convert to fraction form
    34,749.20/52,123.80 = 20,925.20/x
  3. Step 3: Cross multiply
    34,749.20x = 52,123.80 × 20,925.20
  4. Step 4: Simplify right side
    34,749.20x = 1,090,700,939.76
  5. Step 5: Solve for x
    x = 1,090,700,939.76/34,749.20
  6. Step 6: Final answer
    x = 31,387.80

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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.