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Finding the Fourth Proportional to 35,500.75, 48,985.77 and 20,394.07

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Solution

The fourth proportional to 35,500.75, 48,985.77 and 20,394.07 is: 28,140.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,500.75 : 48,985.77 = 20,394.07 : x
  2. Step 2: Convert to fraction form
    35,500.75/48,985.77 = 20,394.07/x
  3. Step 3: Cross multiply
    35,500.75x = 48,985.77 × 20,394.07
  4. Step 4: Simplify right side
    35,500.75x = 999,019,222.38
  5. Step 5: Solve for x
    x = 999,019,222.38/35,500.75
  6. Step 6: Final answer
    x = 28,140.79

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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.