Home / 65,446.23-90,313.40-39,995.20

Finding the Fourth Proportional to 65,446.23, 90,313.40 and 39,995.20

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Solution

The fourth proportional to 65,446.23, 90,313.40 and 39,995.20 is: 55,191.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,446.23 : 90,313.40 = 39,995.20 : x
  2. Step 2: Convert to fraction form
    65,446.23/90,313.40 = 39,995.20/x
  3. Step 3: Cross multiply
    65,446.23x = 90,313.40 × 39,995.20
  4. Step 4: Simplify right side
    65,446.23x = 3,612,102,044.11
  5. Step 5: Solve for x
    x = 3,612,102,044.11/65,446.23
  6. Step 6: Final answer
    x = 55,191.91

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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.