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Finding the Fourth Proportional to 79,437.50, 109,624.50 and 43,628.25

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Solution

The fourth proportional to 79,437.50, 109,624.50 and 43,628.25 is: 60,207.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,437.50 : 109,624.50 = 43,628.25 : x
  2. Step 2: Convert to fraction form
    79,437.50/109,624.50 = 43,628.25/x
  3. Step 3: Cross multiply
    79,437.50x = 109,624.50 × 43,628.25
  4. Step 4: Simplify right side
    79,437.50x = 4,782,725,092.13
  5. Step 5: Solve for x
    x = 4,782,725,092.13/79,437.50
  6. Step 6: Final answer
    x = 60,207.40

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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.