Home / 76,702.08-115,052.16-21,297.60

Finding the Fourth Proportional to 76,702.08, 115,052.16 and 21,297.60

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Solution

The fourth proportional to 76,702.08, 115,052.16 and 21,297.60 is: 31,946.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,702.08 : 115,052.16 = 21,297.60 : x
  2. Step 2: Convert to fraction form
    76,702.08/115,052.16 = 21,297.60/x
  3. Step 3: Cross multiply
    76,702.08x = 115,052.16 × 21,297.60
  4. Step 4: Simplify right side
    76,702.08x = 2,450,334,882.82
  5. Step 5: Solve for x
    x = 2,450,334,882.82/76,702.08
  6. Step 6: Final answer
    x = 31,946.13

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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.