Home / 79,071.39-109,117.53-45,078.80

Finding the Fourth Proportional to 79,071.39, 109,117.53 and 45,078.80

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Solution

The fourth proportional to 79,071.39, 109,117.53 and 45,078.80 is: 62,208.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,071.39 : 109,117.53 = 45,078.80 : x
  2. Step 2: Convert to fraction form
    79,071.39/109,117.53 = 45,078.80/x
  3. Step 3: Cross multiply
    79,071.39x = 109,117.53 × 45,078.80
  4. Step 4: Simplify right side
    79,071.39x = 4,918,886,765.78
  5. Step 5: Solve for x
    x = 4,918,886,765.78/79,071.39
  6. Step 6: Final answer
    x = 62,208.17

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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.