Home / 102,639.56-153,982.15-31,569.35

Finding the Fourth Proportional to 102,639.56, 153,982.15 and 31,569.35

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Solution

The fourth proportional to 102,639.56, 153,982.15 and 31,569.35 is: 47,361.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,639.56 : 153,982.15 = 31,569.35 : x
  2. Step 2: Convert to fraction form
    102,639.56/153,982.15 = 31,569.35/x
  3. Step 3: Cross multiply
    102,639.56x = 153,982.15 × 31,569.35
  4. Step 4: Simplify right side
    102,639.56x = 4,861,115,538.27
  5. Step 5: Solve for x
    x = 4,861,115,538.27/102,639.56
  6. Step 6: Final answer
    x = 47,361.03

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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.