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Finding the Fourth Proportional to 67,693, 101,539.50 and 18,445

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Solution

The fourth proportional to 67,693, 101,539.50 and 18,445 is: 27,667.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,693 : 101,539.50 = 18,445 : x
  2. Step 2: Convert to fraction form
    67,693/101,539.50 = 18,445/x
  3. Step 3: Cross multiply
    67,693x = 101,539.50 × 18,445
  4. Step 4: Simplify right side
    67,693x = 1,872,896,077.50
  5. Step 5: Solve for x
    x = 1,872,896,077.50/67,693
  6. Step 6: Final answer
    x = 27,667.50

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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.