Home / 65,760.16-90,721.14-40,256.92

Finding the Fourth Proportional to 65,760.16, 90,721.14 and 40,256.92

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Solution

The fourth proportional to 65,760.16, 90,721.14 and 40,256.92 is: 55,537.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,760.16 : 90,721.14 = 40,256.92 : x
  2. Step 2: Convert to fraction form
    65,760.16/90,721.14 = 40,256.92/x
  3. Step 3: Cross multiply
    65,760.16x = 90,721.14 × 40,256.92
  4. Step 4: Simplify right side
    65,760.16x = 3,652,153,675.29
  5. Step 5: Solve for x
    x = 3,652,153,675.29/65,760.16
  6. Step 6: Final answer
    x = 55,537.48

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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.