Home / 56,712.56-78,266.40-31,562.60

Finding the Fourth Proportional to 56,712.56, 78,266.40 and 31,562.60

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Solution

The fourth proportional to 56,712.56, 78,266.40 and 31,562.60 is: 43,558.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,712.56 : 78,266.40 = 31,562.60 : x
  2. Step 2: Convert to fraction form
    56,712.56/78,266.40 = 31,562.60/x
  3. Step 3: Cross multiply
    56,712.56x = 78,266.40 × 31,562.60
  4. Step 4: Simplify right side
    56,712.56x = 2,470,291,076.64
  5. Step 5: Solve for x
    x = 2,470,291,076.64/56,712.56
  6. Step 6: Final answer
    x = 43,558.10

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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.