Home / 66,020.52-91,002.21-51,655.57

Finding the Fourth Proportional to 66,020.52, 91,002.21 and 51,655.57

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Solution

The fourth proportional to 66,020.52, 91,002.21 and 51,655.57 is: 71,201.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,020.52 : 91,002.21 = 51,655.57 : x
  2. Step 2: Convert to fraction form
    66,020.52/91,002.21 = 51,655.57/x
  3. Step 3: Cross multiply
    66,020.52x = 91,002.21 × 51,655.57
  4. Step 4: Simplify right side
    66,020.52x = 4,700,771,264.76
  5. Step 5: Solve for x
    x = 4,700,771,264.76/66,020.52
  6. Step 6: Final answer
    x = 71,201.67

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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.