Home / 56,728.50-78,285.33-31,577.46

Finding the Fourth Proportional to 56,728.50, 78,285.33 and 31,577.46

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Solution

The fourth proportional to 56,728.50, 78,285.33 and 31,577.46 is: 43,576.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,728.50 : 78,285.33 = 31,577.46 : x
  2. Step 2: Convert to fraction form
    56,728.50/78,285.33 = 31,577.46/x
  3. Step 3: Cross multiply
    56,728.50x = 78,285.33 × 31,577.46
  4. Step 4: Simplify right side
    56,728.50x = 2,472,051,876.66
  5. Step 5: Solve for x
    x = 2,472,051,876.66/56,728.50
  6. Step 6: Final answer
    x = 43,576.89

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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.