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Finding the Fourth Proportional to 79,674.30, 119,511.45 and 57,642.30

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Solution

The fourth proportional to 79,674.30, 119,511.45 and 57,642.30 is: 86,463.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,674.30 : 119,511.45 = 57,642.30 : x
  2. Step 2: Convert to fraction form
    79,674.30/119,511.45 = 57,642.30/x
  3. Step 3: Cross multiply
    79,674.30x = 119,511.45 × 57,642.30
  4. Step 4: Simplify right side
    79,674.30x = 6,888,914,854.34
  5. Step 5: Solve for x
    x = 6,888,914,854.34/79,674.30
  6. Step 6: Final answer
    x = 86,463.45

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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.