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Finding the Fourth Proportional to 45,690, 68,535 and 17,988

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Solution

The fourth proportional to 45,690, 68,535 and 17,988 is: 26,982

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,690 : 68,535 = 17,988 : x
  2. Step 2: Convert to fraction form
    45,690/68,535 = 17,988/x
  3. Step 3: Cross multiply
    45,690x = 68,535 × 17,988
  4. Step 4: Simplify right side
    45,690x = 1,232,807,580
  5. Step 5: Solve for x
    x = 1,232,807,580/45,690
  6. Step 6: Final answer
    x = 26,982

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.