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Finding the Fourth Proportional to 78,673.96, 118,009.32 and 19,508.95

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Solution

The fourth proportional to 78,673.96, 118,009.32 and 19,508.95 is: 29,263.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,673.96 : 118,009.32 = 19,508.95 : x
  2. Step 2: Convert to fraction form
    78,673.96/118,009.32 = 19,508.95/x
  3. Step 3: Cross multiply
    78,673.96x = 118,009.32 × 19,508.95
  4. Step 4: Simplify right side
    78,673.96x = 2,302,237,923.41
  5. Step 5: Solve for x
    x = 2,302,237,923.41/78,673.96
  6. Step 6: Final answer
    x = 29,263.02

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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.