Home / 51,439.81-70,983.58-28,774.89

Finding the Fourth Proportional to 51,439.81, 70,983.58 and 28,774.89

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Solution

The fourth proportional to 51,439.81, 70,983.58 and 28,774.89 is: 39,707.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,439.81 : 70,983.58 = 28,774.89 : x
  2. Step 2: Convert to fraction form
    51,439.81/70,983.58 = 28,774.89/x
  3. Step 3: Cross multiply
    51,439.81x = 70,983.58 × 28,774.89
  4. Step 4: Simplify right side
    51,439.81x = 2,042,544,706.31
  5. Step 5: Solve for x
    x = 2,042,544,706.31/51,439.81
  6. Step 6: Final answer
    x = 39,707.47

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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.