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Finding the Fourth Proportional to 64,486.60, 96,576.30 and 39,603.40

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Solution

The fourth proportional to 64,486.60, 96,576.30 and 39,603.40 is: 59,310.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,486.60 : 96,576.30 = 39,603.40 : x
  2. Step 2: Convert to fraction form
    64,486.60/96,576.30 = 39,603.40/x
  3. Step 3: Cross multiply
    64,486.60x = 96,576.30 × 39,603.40
  4. Step 4: Simplify right side
    64,486.60x = 3,824,749,839.42
  5. Step 5: Solve for x
    x = 3,824,749,839.42/64,486.60
  6. Step 6: Final answer
    x = 59,310.77

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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.