Home / 57,055.33-78,730.32-31,557.64

Finding the Fourth Proportional to 57,055.33, 78,730.32 and 31,557.64

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Solution

The fourth proportional to 57,055.33, 78,730.32 and 31,557.64 is: 43,546.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,055.33 : 78,730.32 = 31,557.64 : x
  2. Step 2: Convert to fraction form
    57,055.33/78,730.32 = 31,557.64/x
  3. Step 3: Cross multiply
    57,055.33x = 78,730.32 × 31,557.64
  4. Step 4: Simplify right side
    57,055.33x = 2,484,543,095.64
  5. Step 5: Solve for x
    x = 2,484,543,095.64/57,055.33
  6. Step 6: Final answer
    x = 43,546.20

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.