Home / 72,665.85-100,277.97-40,840.14

Finding the Fourth Proportional to 72,665.85, 100,277.97 and 40,840.14

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Solution

The fourth proportional to 72,665.85, 100,277.97 and 40,840.14 is: 56,358.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,665.85 : 100,277.97 = 40,840.14 : x
  2. Step 2: Convert to fraction form
    72,665.85/100,277.97 = 40,840.14/x
  3. Step 3: Cross multiply
    72,665.85x = 100,277.97 × 40,840.14
  4. Step 4: Simplify right side
    72,665.85x = 4,095,366,333.72
  5. Step 5: Solve for x
    x = 4,095,366,333.72/72,665.85
  6. Step 6: Final answer
    x = 56,358.89

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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.