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Finding the Fourth Proportional to 65,345.40, 97,799.40 and 57,472.20

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Solution

The fourth proportional to 65,345.40, 97,799.40 and 57,472.20 is: 86,015.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,345.40 : 97,799.40 = 57,472.20 : x
  2. Step 2: Convert to fraction form
    65,345.40/97,799.40 = 57,472.20/x
  3. Step 3: Cross multiply
    65,345.40x = 97,799.40 × 57,472.20
  4. Step 4: Simplify right side
    65,345.40x = 5,620,746,676.68
  5. Step 5: Solve for x
    x = 5,620,746,676.68/65,345.40
  6. Step 6: Final answer
    x = 86,015.95

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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.