Home / 81,702.22-122,491.10-42,234.16

Finding the Fourth Proportional to 81,702.22, 122,491.10 and 42,234.16

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Solution

The fourth proportional to 81,702.22, 122,491.10 and 42,234.16 is: 63,319.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,702.22 : 122,491.10 = 42,234.16 : x
  2. Step 2: Convert to fraction form
    81,702.22/122,491.10 = 42,234.16/x
  3. Step 3: Cross multiply
    81,702.22x = 122,491.10 × 42,234.16
  4. Step 4: Simplify right side
    81,702.22x = 5,173,308,715.98
  5. Step 5: Solve for x
    x = 5,173,308,715.98/81,702.22
  6. Step 6: Final answer
    x = 63,319.07

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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.