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Finding the Fourth Proportional to 75,620.76, 113,146.12 and 45,113.07

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Solution

The fourth proportional to 75,620.76, 113,146.12 and 45,113.07 is: 67,499.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,620.76 : 113,146.12 = 45,113.07 : x
  2. Step 2: Convert to fraction form
    75,620.76/113,146.12 = 45,113.07/x
  3. Step 3: Cross multiply
    75,620.76x = 113,146.12 × 45,113.07
  4. Step 4: Simplify right side
    75,620.76x = 5,104,368,802.91
  5. Step 5: Solve for x
    x = 5,104,368,802.91/75,620.76
  6. Step 6: Final answer
    x = 67,499.57

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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.