Home / 72,054.28-99,438.06-40,223.08

Finding the Fourth Proportional to 72,054.28, 99,438.06 and 40,223.08

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Solution

The fourth proportional to 72,054.28, 99,438.06 and 40,223.08 is: 55,509.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,054.28 : 99,438.06 = 40,223.08 : x
  2. Step 2: Convert to fraction form
    72,054.28/99,438.06 = 40,223.08/x
  3. Step 3: Cross multiply
    72,054.28x = 99,438.06 × 40,223.08
  4. Step 4: Simplify right side
    72,054.28x = 3,999,705,042.42
  5. Step 5: Solve for x
    x = 3,999,705,042.42/72,054.28
  6. Step 6: Final answer
    x = 55,509.61

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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.