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Finding the Fourth Proportional to 65,318.21, 97,811.12 and 43,064.07

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Solution

The fourth proportional to 65,318.21, 97,811.12 and 43,064.07 is: 64,486.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,318.21 : 97,811.12 = 43,064.07 : x
  2. Step 2: Convert to fraction form
    65,318.21/97,811.12 = 43,064.07/x
  3. Step 3: Cross multiply
    65,318.21x = 97,811.12 × 43,064.07
  4. Step 4: Simplify right side
    65,318.21x = 4,212,144,918.46
  5. Step 5: Solve for x
    x = 4,212,144,918.46/65,318.21
  6. Step 6: Final answer
    x = 64,486.53

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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.