Home / 56,729.57-78,286.14-31,235.40

Finding the Fourth Proportional to 56,729.57, 78,286.14 and 31,235.40

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Solution

The fourth proportional to 56,729.57, 78,286.14 and 31,235.40 is: 43,104.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,729.57 : 78,286.14 = 31,235.40 : x
  2. Step 2: Convert to fraction form
    56,729.57/78,286.14 = 31,235.40/x
  3. Step 3: Cross multiply
    56,729.57x = 78,286.14 × 31,235.40
  4. Step 4: Simplify right side
    56,729.57x = 2,445,298,897.36
  5. Step 5: Solve for x
    x = 2,445,298,897.36/56,729.57
  6. Step 6: Final answer
    x = 43,104.49

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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.