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Finding the Fourth Proportional to 84,007.20, 115,928.64 and 46,282.80

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Solution

The fourth proportional to 84,007.20, 115,928.64 and 46,282.80 is: 63,869.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,007.20 : 115,928.64 = 46,282.80 : x
  2. Step 2: Convert to fraction form
    84,007.20/115,928.64 = 46,282.80/x
  3. Step 3: Cross multiply
    84,007.20x = 115,928.64 × 46,282.80
  4. Step 4: Simplify right side
    84,007.20x = 5,365,502,059.39
  5. Step 5: Solve for x
    x = 5,365,502,059.39/84,007.20
  6. Step 6: Final answer
    x = 63,869.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.