Home / 30,125.45-45,188.55-7,939.01

Finding the Fourth Proportional to 30,125.45, 45,188.55 and 7,939.01

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Solution

The fourth proportional to 30,125.45, 45,188.55 and 7,939.01 is: 11,908.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,125.45 : 45,188.55 = 7,939.01 : x
  2. Step 2: Convert to fraction form
    30,125.45/45,188.55 = 7,939.01/x
  3. Step 3: Cross multiply
    30,125.45x = 45,188.55 × 7,939.01
  4. Step 4: Simplify right side
    30,125.45x = 358,752,463.31
  5. Step 5: Solve for x
    x = 358,752,463.31/30,125.45
  6. Step 6: Final answer
    x = 11,908.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.