Home / 78,865.52-118,252.80-53,935.79

Finding the Fourth Proportional to 78,865.52, 118,252.80 and 53,935.79

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Solution

The fourth proportional to 78,865.52, 118,252.80 and 53,935.79 is: 80,872.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,865.52 : 118,252.80 = 53,935.79 : x
  2. Step 2: Convert to fraction form
    78,865.52/118,252.80 = 53,935.79/x
  3. Step 3: Cross multiply
    78,865.52x = 118,252.80 × 53,935.79
  4. Step 4: Simplify right side
    78,865.52x = 6,378,057,596.45
  5. Step 5: Solve for x
    x = 6,378,057,596.45/78,865.52
  6. Step 6: Final answer
    x = 80,872.58

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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.