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Finding the Fourth Proportional to 65,826.84, 90,840.92 and 35,612.20

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Solution

The fourth proportional to 65,826.84, 90,840.92 and 35,612.20 is: 49,144.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,826.84 : 90,840.92 = 35,612.20 : x
  2. Step 2: Convert to fraction form
    65,826.84/90,840.92 = 35,612.20/x
  3. Step 3: Cross multiply
    65,826.84x = 90,840.92 × 35,612.20
  4. Step 4: Simplify right side
    65,826.84x = 3,235,044,606.06
  5. Step 5: Solve for x
    x = 3,235,044,606.06/65,826.84
  6. Step 6: Final answer
    x = 49,144.77

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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.