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Finding the Fourth Proportional to 79,148.75, 109,225.16 and 43,338.75

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Solution

The fourth proportional to 79,148.75, 109,225.16 and 43,338.75 is: 59,807.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,148.75 : 109,225.16 = 43,338.75 : x
  2. Step 2: Convert to fraction form
    79,148.75/109,225.16 = 43,338.75/x
  3. Step 3: Cross multiply
    79,148.75x = 109,225.16 × 43,338.75
  4. Step 4: Simplify right side
    79,148.75x = 4,733,681,439.18
  5. Step 5: Solve for x
    x = 4,733,681,439.18/79,148.75
  6. Step 6: Final answer
    x = 59,807.41

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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.