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Finding the Fourth Proportional to 72,475.98, 100,007.19 and 40,210.08

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Solution

The fourth proportional to 72,475.98, 100,007.19 and 40,210.08 is: 55,484.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,475.98 : 100,007.19 = 40,210.08 : x
  2. Step 2: Convert to fraction form
    72,475.98/100,007.19 = 40,210.08/x
  3. Step 3: Cross multiply
    72,475.98x = 100,007.19 × 40,210.08
  4. Step 4: Simplify right side
    72,475.98x = 4,021,297,110.48
  5. Step 5: Solve for x
    x = 4,021,297,110.48/72,475.98
  6. Step 6: Final answer
    x = 55,484.55

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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.