Home / 76,939.34-106,176-42,947.54

Finding the Fourth Proportional to 76,939.34, 106,176 and 42,947.54

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Solution

The fourth proportional to 76,939.34, 106,176 and 42,947.54 is: 59,267.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,939.34 : 106,176 = 42,947.54 : x
  2. Step 2: Convert to fraction form
    76,939.34/106,176 = 42,947.54/x
  3. Step 3: Cross multiply
    76,939.34x = 106,176 × 42,947.54
  4. Step 4: Simplify right side
    76,939.34x = 4,559,997,476.16
  5. Step 5: Solve for x
    x = 4,559,997,476.16/76,939.34
  6. Step 6: Final answer
    x = 59,267.43

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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.