Home / 78,840.10-118,256.82-36,705.70

Finding the Fourth Proportional to 78,840.10, 118,256.82 and 36,705.70

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Solution

The fourth proportional to 78,840.10, 118,256.82 and 36,705.70 is: 55,057.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,840.10 : 118,256.82 = 36,705.70 : x
  2. Step 2: Convert to fraction form
    78,840.10/118,256.82 = 36,705.70/x
  3. Step 3: Cross multiply
    78,840.10x = 118,256.82 × 36,705.70
  4. Step 4: Simplify right side
    78,840.10x = 4,340,699,357.87
  5. Step 5: Solve for x
    x = 4,340,699,357.87/78,840.10
  6. Step 6: Final answer
    x = 55,057.00

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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.