Home / 72,209.98-99,659.06-40,380.63

Finding the Fourth Proportional to 72,209.98, 99,659.06 and 40,380.63

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Solution

The fourth proportional to 72,209.98, 99,659.06 and 40,380.63 is: 55,730.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,209.98 : 99,659.06 = 40,380.63 : x
  2. Step 2: Convert to fraction form
    72,209.98/99,659.06 = 40,380.63/x
  3. Step 3: Cross multiply
    72,209.98x = 99,659.06 × 40,380.63
  4. Step 4: Simplify right side
    72,209.98x = 4,024,295,628.01
  5. Step 5: Solve for x
    x = 4,024,295,628.01/72,209.98
  6. Step 6: Final answer
    x = 55,730.46

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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.