Home / 51,239.58-70,709.40-28,580.76

Finding the Fourth Proportional to 51,239.58, 70,709.40 and 28,580.76

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Solution

The fourth proportional to 51,239.58, 70,709.40 and 28,580.76 is: 39,440.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,239.58 : 70,709.40 = 28,580.76 : x
  2. Step 2: Convert to fraction form
    51,239.58/70,709.40 = 28,580.76/x
  3. Step 3: Cross multiply
    51,239.58x = 70,709.40 × 28,580.76
  4. Step 4: Simplify right side
    51,239.58x = 2,020,928,391.14
  5. Step 5: Solve for x
    x = 2,020,928,391.14/51,239.58
  6. Step 6: Final answer
    x = 39,440.77

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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.