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Finding the Fourth Proportional to 64,988.56, 97,261.06 and 54,470.46

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Solution

The fourth proportional to 64,988.56, 97,261.06 and 54,470.46 is: 81,519.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,988.56 : 97,261.06 = 54,470.46 : x
  2. Step 2: Convert to fraction form
    64,988.56/97,261.06 = 54,470.46/x
  3. Step 3: Cross multiply
    64,988.56x = 97,261.06 × 54,470.46
  4. Step 4: Simplify right side
    64,988.56x = 5,297,854,678.29
  5. Step 5: Solve for x
    x = 5,297,854,678.29/64,988.56
  6. Step 6: Final answer
    x = 81,519.80

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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.