Home / 66,210.40-99,321.72-18,826.48

Finding the Fourth Proportional to 66,210.40, 99,321.72 and 18,826.48

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Solution

The fourth proportional to 66,210.40, 99,321.72 and 18,826.48 is: 28,241.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,210.40 : 99,321.72 = 18,826.48 : x
  2. Step 2: Convert to fraction form
    66,210.40/99,321.72 = 18,826.48/x
  3. Step 3: Cross multiply
    66,210.40x = 99,321.72 × 18,826.48
  4. Step 4: Simplify right side
    66,210.40x = 1,869,877,784.40
  5. Step 5: Solve for x
    x = 1,869,877,784.40/66,210.40
  6. Step 6: Final answer
    x = 28,241.45

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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.