Home / 56,690.40-78,230.88-31,539.36

Finding the Fourth Proportional to 56,690.40, 78,230.88 and 31,539.36

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Solution

The fourth proportional to 56,690.40, 78,230.88 and 31,539.36 is: 43,523.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,690.40 : 78,230.88 = 31,539.36 : x
  2. Step 2: Convert to fraction form
    56,690.40/78,230.88 = 31,539.36/x
  3. Step 3: Cross multiply
    56,690.40x = 78,230.88 × 31,539.36
  4. Step 4: Simplify right side
    56,690.40x = 2,467,351,887.44
  5. Step 5: Solve for x
    x = 2,467,351,887.44/56,690.40
  6. Step 6: Final answer
    x = 43,523.28

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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.