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Finding the Fourth Proportional to 64,992.11, 97,502.74 and 20,620.31

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Solution

The fourth proportional to 64,992.11, 97,502.74 and 20,620.31 is: 30,935.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,992.11 : 97,502.74 = 20,620.31 : x
  2. Step 2: Convert to fraction form
    64,992.11/97,502.74 = 20,620.31/x
  3. Step 3: Cross multiply
    64,992.11x = 97,502.74 × 20,620.31
  4. Step 4: Simplify right side
    64,992.11x = 2,010,536,185.58
  5. Step 5: Solve for x
    x = 2,010,536,185.58/64,992.11
  6. Step 6: Final answer
    x = 30,935.08

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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.