Home / 40,025,856.85-55,235,729.69-21,691,142.35

Finding the Fourth Proportional to 40,025,856.85, 55,235,729.69 and 21,691,142.35

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Solution

The fourth proportional to 40,025,856.85, 55,235,729.69 and 21,691,142.35 is: 29,933,802.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,025,856.85 : 55,235,729.69 = 21,691,142.35 : x
  2. Step 2: Convert to fraction form
    40,025,856.85/55,235,729.69 = 21,691,142.35/x
  3. Step 3: Cross multiply
    40,025,856.85x = 55,235,729.69 × 21,691,142.35
  4. Step 4: Simplify right side
    40,025,856.85x = 1,198,126,075,346,708
  5. Step 5: Solve for x
    x = 1,198,126,075,346,708/40,025,856.85
  6. Step 6: Final answer
    x = 29,933,802.04

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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.