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Finding the Fourth Proportional to 79,920.32, 110,289.51 and 45,465.17

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Solution

The fourth proportional to 79,920.32, 110,289.51 and 45,465.17 is: 62,741.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,920.32 : 110,289.51 = 45,465.17 : x
  2. Step 2: Convert to fraction form
    79,920.32/110,289.51 = 45,465.17/x
  3. Step 3: Cross multiply
    79,920.32x = 110,289.51 × 45,465.17
  4. Step 4: Simplify right side
    79,920.32x = 5,014,330,769.92
  5. Step 5: Solve for x
    x = 5,014,330,769.92/79,920.32
  6. Step 6: Final answer
    x = 62,741.63

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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.