Home / 79,218.08-118,892.76-39,786.48

Finding the Fourth Proportional to 79,218.08, 118,892.76 and 39,786.48

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Solution

The fourth proportional to 79,218.08, 118,892.76 and 39,786.48 is: 59,712.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,218.08 : 118,892.76 = 39,786.48 : x
  2. Step 2: Convert to fraction form
    79,218.08/118,892.76 = 39,786.48/x
  3. Step 3: Cross multiply
    79,218.08x = 118,892.76 × 39,786.48
  4. Step 4: Simplify right side
    79,218.08x = 4,730,324,417.88
  5. Step 5: Solve for x
    x = 4,730,324,417.88/79,218.08
  6. Step 6: Final answer
    x = 59,712.69

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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.