Home / 79,207.07-109,402.85-64,116.77

Finding the Fourth Proportional to 79,207.07, 109,402.85 and 64,116.77

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Solution

The fourth proportional to 79,207.07, 109,402.85 and 64,116.77 is: 88,559.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,207.07 : 109,402.85 = 64,116.77 : x
  2. Step 2: Convert to fraction form
    79,207.07/109,402.85 = 64,116.77/x
  3. Step 3: Cross multiply
    79,207.07x = 109,402.85 × 64,116.77
  4. Step 4: Simplify right side
    79,207.07x = 7,014,556,984.07
  5. Step 5: Solve for x
    x = 7,014,556,984.07/79,207.07
  6. Step 6: Final answer
    x = 88,559.74

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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.