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Finding the Fourth Proportional to 78,808.09, 118,145.59 and 36,666.41

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Solution

The fourth proportional to 78,808.09, 118,145.59 and 36,666.41 is: 54,968.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,808.09 : 118,145.59 = 36,666.41 : x
  2. Step 2: Convert to fraction form
    78,808.09/118,145.59 = 36,666.41/x
  3. Step 3: Cross multiply
    78,808.09x = 118,145.59 × 36,666.41
  4. Step 4: Simplify right side
    78,808.09x = 4,331,974,642.63
  5. Step 5: Solve for x
    x = 4,331,974,642.63/78,808.09
  6. Step 6: Final answer
    x = 54,968.65

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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.