Home / 56,912.08-78,543.12-31,765.36

Finding the Fourth Proportional to 56,912.08, 78,543.12 and 31,765.36

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Solution

The fourth proportional to 56,912.08, 78,543.12 and 31,765.36 is: 43,838.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,912.08 : 78,543.12 = 31,765.36 : x
  2. Step 2: Convert to fraction form
    56,912.08/78,543.12 = 31,765.36/x
  3. Step 3: Cross multiply
    56,912.08x = 78,543.12 × 31,765.36
  4. Step 4: Simplify right side
    56,912.08x = 2,494,950,482.32
  5. Step 5: Solve for x
    x = 2,494,950,482.32/56,912.08
  6. Step 6: Final answer
    x = 43,838.68

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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.