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Finding the Fourth Proportional to 34,689, 47,870.73 and 18,773.45

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Solution

The fourth proportional to 34,689, 47,870.73 and 18,773.45 is: 25,907.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,689 : 47,870.73 = 18,773.45 : x
  2. Step 2: Convert to fraction form
    34,689/47,870.73 = 18,773.45/x
  3. Step 3: Cross multiply
    34,689x = 47,870.73 × 18,773.45
  4. Step 4: Simplify right side
    34,689x = 898,698,516.76
  5. Step 5: Solve for x
    x = 898,698,516.76/34,689
  6. Step 6: Final answer
    x = 25,907.31

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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.