Home / 102,478.31-153,722.07-31,395.75

Finding the Fourth Proportional to 102,478.31, 153,722.07 and 31,395.75

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Solution

The fourth proportional to 102,478.31, 153,722.07 and 31,395.75 is: 47,095.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,478.31 : 153,722.07 = 31,395.75 : x
  2. Step 2: Convert to fraction form
    102,478.31/153,722.07 = 31,395.75/x
  3. Step 3: Cross multiply
    102,478.31x = 153,722.07 × 31,395.75
  4. Step 4: Simplify right side
    102,478.31x = 4,826,219,834.98
  5. Step 5: Solve for x
    x = 4,826,219,834.98/102,478.31
  6. Step 6: Final answer
    x = 47,095.04

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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.