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Finding the Fourth Proportional to 66,869.94, 100,216.35 and 55,798.50

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Solution

The fourth proportional to 66,869.94, 100,216.35 and 55,798.50 is: 83,623.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,869.94 : 100,216.35 = 55,798.50 : x
  2. Step 2: Convert to fraction form
    66,869.94/100,216.35 = 55,798.50/x
  3. Step 3: Cross multiply
    66,869.94x = 100,216.35 × 55,798.50
  4. Step 4: Simplify right side
    66,869.94x = 5,591,922,005.48
  5. Step 5: Solve for x
    x = 5,591,922,005.48/66,869.94
  6. Step 6: Final answer
    x = 83,623.85

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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.