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Finding the Fourth Proportional to 65,259.76, 97,912.80 and 40,270.72

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Solution

The fourth proportional to 65,259.76, 97,912.80 and 40,270.72 is: 60,420.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,259.76 : 97,912.80 = 40,270.72 : x
  2. Step 2: Convert to fraction form
    65,259.76/97,912.80 = 40,270.72/x
  3. Step 3: Cross multiply
    65,259.76x = 97,912.80 × 40,270.72
  4. Step 4: Simplify right side
    65,259.76x = 3,943,018,953.22
  5. Step 5: Solve for x
    x = 3,943,018,953.22/65,259.76
  6. Step 6: Final answer
    x = 60,420.37

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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.