Home / 57,045.12-78,720.96-31,896.96

Finding the Fourth Proportional to 57,045.12, 78,720.96 and 31,896.96

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Solution

The fourth proportional to 57,045.12, 78,720.96 and 31,896.96 is: 44,017.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,045.12 : 78,720.96 = 31,896.96 : x
  2. Step 2: Convert to fraction form
    57,045.12/78,720.96 = 31,896.96/x
  3. Step 3: Cross multiply
    57,045.12x = 78,720.96 × 31,896.96
  4. Step 4: Simplify right side
    57,045.12x = 2,510,959,312.28
  5. Step 5: Solve for x
    x = 2,510,959,312.28/57,045.12
  6. Step 6: Final answer
    x = 44,017.07

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1.5x scale

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.