Home / 105,475.03-145,555.01-57,076.92

Finding the Fourth Proportional to 105,475.03, 145,555.01 and 57,076.92

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Solution

The fourth proportional to 105,475.03, 145,555.01 and 57,076.92 is: 78,765.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,475.03 : 145,555.01 = 57,076.92 : x
  2. Step 2: Convert to fraction form
    105,475.03/145,555.01 = 57,076.92/x
  3. Step 3: Cross multiply
    105,475.03x = 145,555.01 × 57,076.92
  4. Step 4: Simplify right side
    105,475.03x = 8,307,831,375.98
  5. Step 5: Solve for x
    x = 8,307,831,375.98/105,475.03
  6. Step 6: Final answer
    x = 78,765.86

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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.