Home / 57,056.33-78,731.70-31,558.64

Finding the Fourth Proportional to 57,056.33, 78,731.70 and 31,558.64

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Solution

The fourth proportional to 57,056.33, 78,731.70 and 31,558.64 is: 43,547.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,056.33 : 78,731.70 = 31,558.64 : x
  2. Step 2: Convert to fraction form
    57,056.33/78,731.70 = 31,558.64/x
  3. Step 3: Cross multiply
    57,056.33x = 78,731.70 × 31,558.64
  4. Step 4: Simplify right side
    57,056.33x = 2,484,665,376.89
  5. Step 5: Solve for x
    x = 2,484,665,376.89/57,056.33
  6. Step 6: Final answer
    x = 43,547.58

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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.