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Finding the Fourth Proportional to 35,480, 48,962.76 and 21,333.08

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Solution

The fourth proportional to 35,480, 48,962.76 and 21,333.08 is: 29,439.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,480 : 48,962.76 = 21,333.08 : x
  2. Step 2: Convert to fraction form
    35,480/48,962.76 = 21,333.08/x
  3. Step 3: Cross multiply
    35,480x = 48,962.76 × 21,333.08
  4. Step 4: Simplify right side
    35,480x = 1,044,526,476.10
  5. Step 5: Solve for x
    x = 1,044,526,476.10/35,480
  6. Step 6: Final answer
    x = 29,439.87

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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.