Home / 65,975.36-91,000.32-40,809.92

Finding the Fourth Proportional to 65,975.36, 91,000.32 and 40,809.92

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Solution

The fourth proportional to 65,975.36, 91,000.32 and 40,809.92 is: 56,289.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,975.36 : 91,000.32 = 40,809.92 : x
  2. Step 2: Convert to fraction form
    65,975.36/91,000.32 = 40,809.92/x
  3. Step 3: Cross multiply
    65,975.36x = 91,000.32 × 40,809.92
  4. Step 4: Simplify right side
    65,975.36x = 3,713,715,779.17
  5. Step 5: Solve for x
    x = 3,713,715,779.17/65,975.36
  6. Step 6: Final answer
    x = 56,289.44

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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.