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Finding the Fourth Proportional to 51,182.40, 76,701.60 and 40,670.40

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Solution

The fourth proportional to 51,182.40, 76,701.60 and 40,670.40 is: 60,948.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,182.40 : 76,701.60 = 40,670.40 : x
  2. Step 2: Convert to fraction form
    51,182.40/76,701.60 = 40,670.40/x
  3. Step 3: Cross multiply
    51,182.40x = 76,701.60 × 40,670.40
  4. Step 4: Simplify right side
    51,182.40x = 3,119,484,752.64
  5. Step 5: Solve for x
    x = 3,119,484,752.64/51,182.40
  6. Step 6: Final answer
    x = 60,948.39

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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.