Home / 51,215.40-76,880.70-39,580.20

Finding the Fourth Proportional to 51,215.40, 76,880.70 and 39,580.20

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Solution

The fourth proportional to 51,215.40, 76,880.70 and 39,580.20 is: 59,414.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,215.40 : 76,880.70 = 39,580.20 : x
  2. Step 2: Convert to fraction form
    51,215.40/76,880.70 = 39,580.20/x
  3. Step 3: Cross multiply
    51,215.40x = 76,880.70 × 39,580.20
  4. Step 4: Simplify right side
    51,215.40x = 3,042,953,482.14
  5. Step 5: Solve for x
    x = 3,042,953,482.14/51,215.40
  6. Step 6: Final answer
    x = 59,414.81

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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.