Home / 65,623.97-90,567.88-40,147.30

Finding the Fourth Proportional to 65,623.97, 90,567.88 and 40,147.30

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Solution

The fourth proportional to 65,623.97, 90,567.88 and 40,147.30 is: 55,407.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,623.97 : 90,567.88 = 40,147.30 : x
  2. Step 2: Convert to fraction form
    65,623.97/90,567.88 = 40,147.30/x
  3. Step 3: Cross multiply
    65,623.97x = 90,567.88 × 40,147.30
  4. Step 4: Simplify right side
    65,623.97x = 3,636,055,647.99
  5. Step 5: Solve for x
    x = 3,636,055,647.99/65,623.97
  6. Step 6: Final answer
    x = 55,407.44

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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.