Home / 56,539.62-78,023.25-31,387.50

Finding the Fourth Proportional to 56,539.62, 78,023.25 and 31,387.50

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Solution

The fourth proportional to 56,539.62, 78,023.25 and 31,387.50 is: 43,313.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,539.62 : 78,023.25 = 31,387.50 : x
  2. Step 2: Convert to fraction form
    56,539.62/78,023.25 = 31,387.50/x
  3. Step 3: Cross multiply
    56,539.62x = 78,023.25 × 31,387.50
  4. Step 4: Simplify right side
    56,539.62x = 2,448,954,759.38
  5. Step 5: Solve for x
    x = 2,448,954,759.38/56,539.62
  6. Step 6: Final answer
    x = 43,313.96

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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.