Home / 56,620.08-78,135.84-31,471.20

Finding the Fourth Proportional to 56,620.08, 78,135.84 and 31,471.20

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Solution

The fourth proportional to 56,620.08, 78,135.84 and 31,471.20 is: 43,430.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,620.08 : 78,135.84 = 31,471.20 : x
  2. Step 2: Convert to fraction form
    56,620.08/78,135.84 = 31,471.20/x
  3. Step 3: Cross multiply
    56,620.08x = 78,135.84 × 31,471.20
  4. Step 4: Simplify right side
    56,620.08x = 2,459,028,647.81
  5. Step 5: Solve for x
    x = 2,459,028,647.81/56,620.08
  6. Step 6: Final answer
    x = 43,430.33

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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.