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Finding the Fourth Proportional to 84,005.45, 115,927.46 and 46,279.70

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Solution

The fourth proportional to 84,005.45, 115,927.46 and 46,279.70 is: 63,865.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,005.45 : 115,927.46 = 46,279.70 : x
  2. Step 2: Convert to fraction form
    84,005.45/115,927.46 = 46,279.70/x
  3. Step 3: Cross multiply
    84,005.45x = 115,927.46 × 46,279.70
  4. Step 4: Simplify right side
    84,005.45x = 5,365,087,259.53
  5. Step 5: Solve for x
    x = 5,365,087,259.53/84,005.45
  6. Step 6: Final answer
    x = 63,865.95

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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.