Home / 66,117.39-99,190.76-21,742.35

Finding the Fourth Proportional to 66,117.39, 99,190.76 and 21,742.35

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Solution

The fourth proportional to 66,117.39, 99,190.76 and 21,742.35 is: 32,618.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,117.39 : 99,190.76 = 21,742.35 : x
  2. Step 2: Convert to fraction form
    66,117.39/99,190.76 = 21,742.35/x
  3. Step 3: Cross multiply
    66,117.39x = 99,190.76 × 21,742.35
  4. Step 4: Simplify right side
    66,117.39x = 2,156,640,111.97
  5. Step 5: Solve for x
    x = 2,156,640,111.97/66,117.39
  6. Step 6: Final answer
    x = 32,618.35

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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.