Home / 56,634.88-78,157.08-31,142.35

Finding the Fourth Proportional to 56,634.88, 78,157.08 and 31,142.35

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Solution

The fourth proportional to 56,634.88, 78,157.08 and 31,142.35 is: 42,976.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,634.88 : 78,157.08 = 31,142.35 : x
  2. Step 2: Convert to fraction form
    56,634.88/78,157.08 = 31,142.35/x
  3. Step 3: Cross multiply
    56,634.88x = 78,157.08 × 31,142.35
  4. Step 4: Simplify right side
    56,634.88x = 2,433,995,140.34
  5. Step 5: Solve for x
    x = 2,433,995,140.34/56,634.88
  6. Step 6: Final answer
    x = 42,976.96

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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.