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Finding the Fourth Proportional to 89,180.72, 133,653.72 and 49,756.40

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Solution

The fourth proportional to 89,180.72, 133,653.72 and 49,756.40 is: 74,569.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,180.72 : 133,653.72 = 49,756.40 : x
  2. Step 2: Convert to fraction form
    89,180.72/133,653.72 = 49,756.40/x
  3. Step 3: Cross multiply
    89,180.72x = 133,653.72 × 49,756.40
  4. Step 4: Simplify right side
    89,180.72x = 6,650,127,953.81
  5. Step 5: Solve for x
    x = 6,650,127,953.81/89,180.72
  6. Step 6: Final answer
    x = 74,569.12

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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.