Home / 66,586.16-91,908.60-38,311.76

Finding the Fourth Proportional to 66,586.16, 91,908.60 and 38,311.76

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Solution

The fourth proportional to 66,586.16, 91,908.60 and 38,311.76 is: 52,881.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,586.16 : 91,908.60 = 38,311.76 : x
  2. Step 2: Convert to fraction form
    66,586.16/91,908.60 = 38,311.76/x
  3. Step 3: Cross multiply
    66,586.16x = 91,908.60 × 38,311.76
  4. Step 4: Simplify right side
    66,586.16x = 3,521,180,225.14
  5. Step 5: Solve for x
    x = 3,521,180,225.14/66,586.16
  6. Step 6: Final answer
    x = 52,881.56

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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.