Home / 51,930.40-77,895.55-12,487.50

Finding the Fourth Proportional to 51,930.40, 77,895.55 and 12,487.50

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Solution

The fourth proportional to 51,930.40, 77,895.55 and 12,487.50 is: 18,731.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,930.40 : 77,895.55 = 12,487.50 : x
  2. Step 2: Convert to fraction form
    51,930.40/77,895.55 = 12,487.50/x
  3. Step 3: Cross multiply
    51,930.40x = 77,895.55 × 12,487.50
  4. Step 4: Simplify right side
    51,930.40x = 972,720,680.63
  5. Step 5: Solve for x
    x = 972,720,680.63/51,930.40
  6. Step 6: Final answer
    x = 18,731.24

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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.