Home / 40,738.34-56,113.75-28,780.92

Finding the Fourth Proportional to 40,738.34, 56,113.75 and 28,780.92

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Solution

The fourth proportional to 40,738.34, 56,113.75 and 28,780.92 is: 39,643.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,738.34 : 56,113.75 = 28,780.92 : x
  2. Step 2: Convert to fraction form
    40,738.34/56,113.75 = 28,780.92/x
  3. Step 3: Cross multiply
    40,738.34x = 56,113.75 × 28,780.92
  4. Step 4: Simplify right side
    40,738.34x = 1,615,004,997.13
  5. Step 5: Solve for x
    x = 1,615,004,997.13/40,738.34
  6. Step 6: Final answer
    x = 39,643.37

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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.