Home / 85,428.18-117,772.29-73,617.30

Finding the Fourth Proportional to 85,428.18, 117,772.29 and 73,617.30

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Solution

The fourth proportional to 85,428.18, 117,772.29 and 73,617.30 is: 101,489.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,428.18 : 117,772.29 = 73,617.30 : x
  2. Step 2: Convert to fraction form
    85,428.18/117,772.29 = 73,617.30/x
  3. Step 3: Cross multiply
    85,428.18x = 117,772.29 × 73,617.30
  4. Step 4: Simplify right side
    85,428.18x = 8,670,078,004.62
  5. Step 5: Solve for x
    x = 8,670,078,004.62/85,428.18
  6. Step 6: Final answer
    x = 101,489.67

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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.