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Finding the Fourth Proportional to 39,447, 59,199.66 and 18,670.50

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Solution

The fourth proportional to 39,447, 59,199.66 and 18,670.50 is: 28,019.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,447 : 59,199.66 = 18,670.50 : x
  2. Step 2: Convert to fraction form
    39,447/59,199.66 = 18,670.50/x
  3. Step 3: Cross multiply
    39,447x = 59,199.66 × 18,670.50
  4. Step 4: Simplify right side
    39,447x = 1,105,287,252.03
  5. Step 5: Solve for x
    x = 1,105,287,252.03/39,447
  6. Step 6: Final answer
    x = 28,019.55

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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.