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Finding the Fourth Proportional to 35,220, 48,605.04 and 20,316

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Solution

The fourth proportional to 35,220, 48,605.04 and 20,316 is: 28,036.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,220 : 48,605.04 = 20,316 : x
  2. Step 2: Convert to fraction form
    35,220/48,605.04 = 20,316/x
  3. Step 3: Cross multiply
    35,220x = 48,605.04 × 20,316
  4. Step 4: Simplify right side
    35,220x = 987,459,992.64
  5. Step 5: Solve for x
    x = 987,459,992.64/35,220
  6. Step 6: Final answer
    x = 28,036.91

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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.