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Finding the Fourth Proportional to 71,873.53, 99,183.18 and 45,030.53

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Solution

The fourth proportional to 71,873.53, 99,183.18 and 45,030.53 is: 62,140.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,873.53 : 99,183.18 = 45,030.53 : x
  2. Step 2: Convert to fraction form
    71,873.53/99,183.18 = 45,030.53/x
  3. Step 3: Cross multiply
    71,873.53x = 99,183.18 × 45,030.53
  4. Step 4: Simplify right side
    71,873.53x = 4,466,271,579.31
  5. Step 5: Solve for x
    x = 4,466,271,579.31/71,873.53
  6. Step 6: Final answer
    x = 62,140.70

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.