Home / 78,870.03-118,259.55-53,940.30

Finding the Fourth Proportional to 78,870.03, 118,259.55 and 53,940.30

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Solution

The fourth proportional to 78,870.03, 118,259.55 and 53,940.30 is: 80,879.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,870.03 : 118,259.55 = 53,940.30 : x
  2. Step 2: Convert to fraction form
    78,870.03/118,259.55 = 53,940.30/x
  3. Step 3: Cross multiply
    78,870.03x = 118,259.55 × 53,940.30
  4. Step 4: Simplify right side
    78,870.03x = 6,378,955,604.87
  5. Step 5: Solve for x
    x = 6,378,955,604.87/78,870.03
  6. Step 6: Final answer
    x = 80,879.34

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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.