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Finding the Fourth Proportional to 79,302.82, 109,427.78 and 45,313.51

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Solution

The fourth proportional to 79,302.82, 109,427.78 and 45,313.51 is: 62,526.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,302.82 : 109,427.78 = 45,313.51 : x
  2. Step 2: Convert to fraction form
    79,302.82/109,427.78 = 45,313.51/x
  3. Step 3: Cross multiply
    79,302.82x = 109,427.78 × 45,313.51
  4. Step 4: Simplify right side
    79,302.82x = 4,958,556,803.31
  5. Step 5: Solve for x
    x = 4,958,556,803.31/79,302.82
  6. Step 6: Final answer
    x = 62,526.87

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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.