Home / 56,753.12-78,318.60-31,258.98

Finding the Fourth Proportional to 56,753.12, 78,318.60 and 31,258.98

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Solution

The fourth proportional to 56,753.12, 78,318.60 and 31,258.98 is: 43,137.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,753.12 : 78,318.60 = 31,258.98 : x
  2. Step 2: Convert to fraction form
    56,753.12/78,318.60 = 31,258.98/x
  3. Step 3: Cross multiply
    56,753.12x = 78,318.60 × 31,258.98
  4. Step 4: Simplify right side
    56,753.12x = 2,448,159,433.81
  5. Step 5: Solve for x
    x = 2,448,159,433.81/56,753.12
  6. Step 6: Final answer
    x = 43,137.00

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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.