Home / 65,472.24-90,360.12-39,973.20

Finding the Fourth Proportional to 65,472.24, 90,360.12 and 39,973.20

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Solution

The fourth proportional to 65,472.24, 90,360.12 and 39,973.20 is: 55,168.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,472.24 : 90,360.12 = 39,973.20 : x
  2. Step 2: Convert to fraction form
    65,472.24/90,360.12 = 39,973.20/x
  3. Step 3: Cross multiply
    65,472.24x = 90,360.12 × 39,973.20
  4. Step 4: Simplify right side
    65,472.24x = 3,611,983,148.78
  5. Step 5: Solve for x
    x = 3,611,983,148.78/65,472.24
  6. Step 6: Final answer
    x = 55,168.16

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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.