Home / 56,109.63-77,432.91-30,960.75

Finding the Fourth Proportional to 56,109.63, 77,432.91 and 30,960.75

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Solution

The fourth proportional to 56,109.63, 77,432.91 and 30,960.75 is: 42,726.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,109.63 : 77,432.91 = 30,960.75 : x
  2. Step 2: Convert to fraction form
    56,109.63/77,432.91 = 30,960.75/x
  3. Step 3: Cross multiply
    56,109.63x = 77,432.91 × 30,960.75
  4. Step 4: Simplify right side
    56,109.63x = 2,397,380,968.28
  5. Step 5: Solve for x
    x = 2,397,380,968.28/56,109.63
  6. Step 6: Final answer
    x = 42,726.73

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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.