Home / 51,135.40-76,631.10-40,623.40

Finding the Fourth Proportional to 51,135.40, 76,631.10 and 40,623.40

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Solution

The fourth proportional to 51,135.40, 76,631.10 and 40,623.40 is: 60,877.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,135.40 : 76,631.10 = 40,623.40 : x
  2. Step 2: Convert to fraction form
    51,135.40/76,631.10 = 40,623.40/x
  3. Step 3: Cross multiply
    51,135.40x = 76,631.10 × 40,623.40
  4. Step 4: Simplify right side
    51,135.40x = 3,113,015,827.74
  5. Step 5: Solve for x
    x = 3,113,015,827.74/51,135.40
  6. Step 6: Final answer
    x = 60,877.90

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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.