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Finding the Fourth Proportional to 64,965.19, 97,447.79 and 15,717.19

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Solution

The fourth proportional to 64,965.19, 97,447.79 and 15,717.19 is: 23,575.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,965.19 : 97,447.79 = 15,717.19 : x
  2. Step 2: Convert to fraction form
    64,965.19/97,447.79 = 15,717.19/x
  3. Step 3: Cross multiply
    64,965.19x = 97,447.79 × 15,717.19
  4. Step 4: Simplify right side
    64,965.19x = 1,531,605,108.30
  5. Step 5: Solve for x
    x = 1,531,605,108.30/64,965.19
  6. Step 6: Final answer
    x = 23,575.78

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1.5x scale

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.