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Finding the Fourth Proportional to 35,487.47, 48,971.05 and 20,369.49

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Solution

The fourth proportional to 35,487.47, 48,971.05 and 20,369.49 is: 28,108.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,487.47 : 48,971.05 = 20,369.49 : x
  2. Step 2: Convert to fraction form
    35,487.47/48,971.05 = 20,369.49/x
  3. Step 3: Cross multiply
    35,487.47x = 48,971.05 × 20,369.49
  4. Step 4: Simplify right side
    35,487.47x = 997,515,262.34
  5. Step 5: Solve for x
    x = 997,515,262.34/35,487.47
  6. Step 6: Final answer
    x = 28,108.95

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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.