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Finding the Fourth Proportional to 78,810.41, 118,214.47 and 36,666.92

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Solution

The fourth proportional to 78,810.41, 118,214.47 and 36,666.92 is: 54,999.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,810.41 : 118,214.47 = 36,666.92 : x
  2. Step 2: Convert to fraction form
    78,810.41/118,214.47 = 36,666.92/x
  3. Step 3: Cross multiply
    78,810.41x = 118,214.47 × 36,666.92
  4. Step 4: Simplify right side
    78,810.41x = 4,334,560,514.33
  5. Step 5: Solve for x
    x = 4,334,560,514.33/78,810.41
  6. Step 6: Final answer
    x = 54,999.85

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1.5x scale

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.