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Finding the Fourth Proportional to 34,885.63, 48,125.25 and 20,728.45

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Solution

The fourth proportional to 34,885.63, 48,125.25 and 20,728.45 is: 28,595.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,885.63 : 48,125.25 = 20,728.45 : x
  2. Step 2: Convert to fraction form
    34,885.63/48,125.25 = 20,728.45/x
  3. Step 3: Cross multiply
    34,885.63x = 48,125.25 × 20,728.45
  4. Step 4: Simplify right side
    34,885.63x = 997,561,838.36
  5. Step 5: Solve for x
    x = 997,561,838.36/34,885.63
  6. Step 6: Final answer
    x = 28,595.21

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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.