Home / 64,969.23-89,659.01-38,131.09

Finding the Fourth Proportional to 64,969.23, 89,659.01 and 38,131.09

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Solution

The fourth proportional to 64,969.23, 89,659.01 and 38,131.09 is: 52,621.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,969.23 : 89,659.01 = 38,131.09 : x
  2. Step 2: Convert to fraction form
    64,969.23/89,659.01 = 38,131.09/x
  3. Step 3: Cross multiply
    64,969.23x = 89,659.01 × 38,131.09
  4. Step 4: Simplify right side
    64,969.23x = 3,418,795,813.11
  5. Step 5: Solve for x
    x = 3,418,795,813.11/64,969.23
  6. Step 6: Final answer
    x = 52,621.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.