Home / 79,135.92-109,209.06-45,140.76

Finding the Fourth Proportional to 79,135.92, 109,209.06 and 45,140.76

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Solution

The fourth proportional to 79,135.92, 109,209.06 and 45,140.76 is: 62,295.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,135.92 : 109,209.06 = 45,140.76 : x
  2. Step 2: Convert to fraction form
    79,135.92/109,209.06 = 45,140.76/x
  3. Step 3: Cross multiply
    79,135.92x = 109,209.06 × 45,140.76
  4. Step 4: Simplify right side
    79,135.92x = 4,929,779,967.29
  5. Step 5: Solve for x
    x = 4,929,779,967.29/79,135.92
  6. Step 6: Final answer
    x = 62,295.10

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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.