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Finding the Fourth Proportional to 65,416.40, 98,124.60 and 21,044.60

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Solution

The fourth proportional to 65,416.40, 98,124.60 and 21,044.60 is: 31,566.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,416.40 : 98,124.60 = 21,044.60 : x
  2. Step 2: Convert to fraction form
    65,416.40/98,124.60 = 21,044.60/x
  3. Step 3: Cross multiply
    65,416.40x = 98,124.60 × 21,044.60
  4. Step 4: Simplify right side
    65,416.40x = 2,064,992,957.16
  5. Step 5: Solve for x
    x = 2,064,992,957.16/65,416.40
  6. Step 6: Final answer
    x = 31,566.90

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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.