Home / 78,810.10-118,214-36,666.61

Finding the Fourth Proportional to 78,810.10, 118,214 and 36,666.61

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Solution

The fourth proportional to 78,810.10, 118,214 and 36,666.61 is: 54,999.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,810.10 : 118,214 = 36,666.61 : x
  2. Step 2: Convert to fraction form
    78,810.10/118,214 = 36,666.61/x
  3. Step 3: Cross multiply
    78,810.10x = 118,214 × 36,666.61
  4. Step 4: Simplify right side
    78,810.10x = 4,334,506,634.54
  5. Step 5: Solve for x
    x = 4,334,506,634.54/78,810.10
  6. Step 6: Final answer
    x = 54,999.38

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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.