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Finding the Fourth Proportional to 64,986.71, 97,480.06 and 35,429.40

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Solution

The fourth proportional to 64,986.71, 97,480.06 and 35,429.40 is: 53,144.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,986.71 : 97,480.06 = 35,429.40 : x
  2. Step 2: Convert to fraction form
    64,986.71/97,480.06 = 35,429.40/x
  3. Step 3: Cross multiply
    64,986.71x = 97,480.06 × 35,429.40
  4. Step 4: Simplify right side
    64,986.71x = 3,453,659,949.19
  5. Step 5: Solve for x
    x = 3,453,659,949.19/64,986.71
  6. Step 6: Final answer
    x = 53,144.10

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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.