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Finding the Fourth Proportional to 64,934.80, 97,402.20 and 57,717.70

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Solution

The fourth proportional to 64,934.80, 97,402.20 and 57,717.70 is: 86,576.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,934.80 : 97,402.20 = 57,717.70 : x
  2. Step 2: Convert to fraction form
    64,934.80/97,402.20 = 57,717.70/x
  3. Step 3: Cross multiply
    64,934.80x = 97,402.20 × 57,717.70
  4. Step 4: Simplify right side
    64,934.80x = 5,621,830,958.94
  5. Step 5: Solve for x
    x = 5,621,830,958.94/64,934.80
  6. Step 6: Final answer
    x = 86,576.55

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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.