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Finding the Fourth Proportional to 98,561.70, 147,672.45 and 45,863.10

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Solution

The fourth proportional to 98,561.70, 147,672.45 and 45,863.10 is: 68,715.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,561.70 : 147,672.45 = 45,863.10 : x
  2. Step 2: Convert to fraction form
    98,561.70/147,672.45 = 45,863.10/x
  3. Step 3: Cross multiply
    98,561.70x = 147,672.45 × 45,863.10
  4. Step 4: Simplify right side
    98,561.70x = 6,772,716,341.60
  5. Step 5: Solve for x
    x = 6,772,716,341.60/98,561.70
  6. Step 6: Final answer
    x = 68,715.50

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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.