Home / 57,056.01-78,731.20-31,558.31

Finding the Fourth Proportional to 57,056.01, 78,731.20 and 31,558.31

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Solution

The fourth proportional to 57,056.01, 78,731.20 and 31,558.31 is: 43,547.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,056.01 : 78,731.20 = 31,558.31 : x
  2. Step 2: Convert to fraction form
    57,056.01/78,731.20 = 31,558.31/x
  3. Step 3: Cross multiply
    57,056.01x = 78,731.20 × 31,558.31
  4. Step 4: Simplify right side
    57,056.01x = 2,484,623,616.27
  5. Step 5: Solve for x
    x = 2,484,623,616.27/57,056.01
  6. Step 6: Final answer
    x = 43,547.10

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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.