Home / 66,263.22-91,438.92-39,407.76

Finding the Fourth Proportional to 66,263.22, 91,438.92 and 39,407.76

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Solution

The fourth proportional to 66,263.22, 91,438.92 and 39,407.76 is: 54,380.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,263.22 : 91,438.92 = 39,407.76 : x
  2. Step 2: Convert to fraction form
    66,263.22/91,438.92 = 39,407.76/x
  3. Step 3: Cross multiply
    66,263.22x = 91,438.92 × 39,407.76
  4. Step 4: Simplify right side
    66,263.22x = 3,603,403,014.02
  5. Step 5: Solve for x
    x = 3,603,403,014.02/66,263.22
  6. Step 6: Final answer
    x = 54,380.14

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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.