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Finding the Fourth Proportional to 75,491.40, 113,237.10 and 40,499.40

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Solution

The fourth proportional to 75,491.40, 113,237.10 and 40,499.40 is: 60,749.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,491.40 : 113,237.10 = 40,499.40 : x
  2. Step 2: Convert to fraction form
    75,491.40/113,237.10 = 40,499.40/x
  3. Step 3: Cross multiply
    75,491.40x = 113,237.10 × 40,499.40
  4. Step 4: Simplify right side
    75,491.40x = 4,586,034,607.74
  5. Step 5: Solve for x
    x = 4,586,034,607.74/75,491.40
  6. Step 6: Final answer
    x = 60,749.10

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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.