Home / 65,721.12-90,695.76-37,426.40

Finding the Fourth Proportional to 65,721.12, 90,695.76 and 37,426.40

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Solution

The fourth proportional to 65,721.12, 90,695.76 and 37,426.40 is: 51,648.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,721.12 : 90,695.76 = 37,426.40 : x
  2. Step 2: Convert to fraction form
    65,721.12/90,695.76 = 37,426.40/x
  3. Step 3: Cross multiply
    65,721.12x = 90,695.76 × 37,426.40
  4. Step 4: Simplify right side
    65,721.12x = 3,394,415,792.06
  5. Step 5: Solve for x
    x = 3,394,415,792.06/65,721.12
  6. Step 6: Final answer
    x = 51,648.78

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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.