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Finding the Fourth Proportional to 65,726.60, 98,662.80 and 51,000.80

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Solution

The fourth proportional to 65,726.60, 98,662.80 and 51,000.80 is: 76,557.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,726.60 : 98,662.80 = 51,000.80 : x
  2. Step 2: Convert to fraction form
    65,726.60/98,662.80 = 51,000.80/x
  3. Step 3: Cross multiply
    65,726.60x = 98,662.80 × 51,000.80
  4. Step 4: Simplify right side
    65,726.60x = 5,031,881,730.24
  5. Step 5: Solve for x
    x = 5,031,881,730.24/65,726.60
  6. Step 6: Final answer
    x = 76,557.77

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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.