Home / 79,113.67-109,155.27-45,109.75

Finding the Fourth Proportional to 79,113.67, 109,155.27 and 45,109.75

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Solution

The fourth proportional to 79,113.67, 109,155.27 and 45,109.75 is: 62,239.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,113.67 : 109,155.27 = 45,109.75 : x
  2. Step 2: Convert to fraction form
    79,113.67/109,155.27 = 45,109.75/x
  3. Step 3: Cross multiply
    79,113.67x = 109,155.27 × 45,109.75
  4. Step 4: Simplify right side
    79,113.67x = 4,923,966,908.17
  5. Step 5: Solve for x
    x = 4,923,966,908.17/79,113.67
  6. Step 6: Final answer
    x = 62,239.14

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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.