Home / 56,729.63-78,286.25-31,235.47

Finding the Fourth Proportional to 56,729.63, 78,286.25 and 31,235.47

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Solution

The fourth proportional to 56,729.63, 78,286.25 and 31,235.47 is: 43,104.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,729.63 : 78,286.25 = 31,235.47 : x
  2. Step 2: Convert to fraction form
    56,729.63/78,286.25 = 31,235.47/x
  3. Step 3: Cross multiply
    56,729.63x = 78,286.25 × 31,235.47
  4. Step 4: Simplify right side
    56,729.63x = 2,445,307,960.32
  5. Step 5: Solve for x
    x = 2,445,307,960.32/56,729.63
  6. Step 6: Final answer
    x = 43,104.60

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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.