Home / 78,923.76-118,344.06-53,970.90

Finding the Fourth Proportional to 78,923.76, 118,344.06 and 53,970.90

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Solution

The fourth proportional to 78,923.76, 118,344.06 and 53,970.90 is: 80,927.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,923.76 : 118,344.06 = 53,970.90 : x
  2. Step 2: Convert to fraction form
    78,923.76/118,344.06 = 53,970.90/x
  3. Step 3: Cross multiply
    78,923.76x = 118,344.06 × 53,970.90
  4. Step 4: Simplify right side
    78,923.76x = 6,387,135,427.85
  5. Step 5: Solve for x
    x = 6,387,135,427.85/78,923.76
  6. Step 6: Final answer
    x = 80,927.92

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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.