Home / 65,810.21-98,715.11-21,436.85

Finding the Fourth Proportional to 65,810.21, 98,715.11 and 21,436.85

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Solution

The fourth proportional to 65,810.21, 98,715.11 and 21,436.85 is: 32,155.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,810.21 : 98,715.11 = 21,436.85 : x
  2. Step 2: Convert to fraction form
    65,810.21/98,715.11 = 21,436.85/x
  3. Step 3: Cross multiply
    65,810.21x = 98,715.11 × 21,436.85
  4. Step 4: Simplify right side
    65,810.21x = 2,116,141,145.41
  5. Step 5: Solve for x
    x = 2,116,141,145.41/65,810.21
  6. Step 6: Final answer
    x = 32,155.21

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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.