Home / 72,619.92-108,977.40-31,070.16

Finding the Fourth Proportional to 72,619.92, 108,977.40 and 31,070.16

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Solution

The fourth proportional to 72,619.92, 108,977.40 and 31,070.16 is: 46,625.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,619.92 : 108,977.40 = 31,070.16 : x
  2. Step 2: Convert to fraction form
    72,619.92/108,977.40 = 31,070.16/x
  3. Step 3: Cross multiply
    72,619.92x = 108,977.40 × 31,070.16
  4. Step 4: Simplify right side
    72,619.92x = 3,385,945,254.38
  5. Step 5: Solve for x
    x = 3,385,945,254.38/72,619.92
  6. Step 6: Final answer
    x = 46,625.57

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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.