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Finding the Fourth Proportional to 99,701.95, 149,492.72 and 39,739.68

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Solution

The fourth proportional to 99,701.95, 149,492.72 and 39,739.68 is: 59,585.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,701.95 : 149,492.72 = 39,739.68 : x
  2. Step 2: Convert to fraction form
    99,701.95/149,492.72 = 39,739.68/x
  3. Step 3: Cross multiply
    99,701.95x = 149,492.72 × 39,739.68
  4. Step 4: Simplify right side
    99,701.95x = 5,940,791,908.97
  5. Step 5: Solve for x
    x = 5,940,791,908.97/99,701.95
  6. Step 6: Final answer
    x = 59,585.51

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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.