Home / 65,680.74-98,521.08-21,307.49

Finding the Fourth Proportional to 65,680.74, 98,521.08 and 21,307.49

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Solution

The fourth proportional to 65,680.74, 98,521.08 and 21,307.49 is: 31,961.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,680.74 : 98,521.08 = 21,307.49 : x
  2. Step 2: Convert to fraction form
    65,680.74/98,521.08 = 21,307.49/x
  3. Step 3: Cross multiply
    65,680.74x = 98,521.08 × 21,307.49
  4. Step 4: Simplify right side
    65,680.74x = 2,099,237,319.25
  5. Step 5: Solve for x
    x = 2,099,237,319.25/65,680.74
  6. Step 6: Final answer
    x = 31,961.23

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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.