Home / 66,638.68-91,924.98-42,738.76

Finding the Fourth Proportional to 66,638.68, 91,924.98 and 42,738.76

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Solution

The fourth proportional to 66,638.68, 91,924.98 and 42,738.76 is: 58,956.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,638.68 : 91,924.98 = 42,738.76 : x
  2. Step 2: Convert to fraction form
    66,638.68/91,924.98 = 42,738.76/x
  3. Step 3: Cross multiply
    66,638.68x = 91,924.98 × 42,738.76
  4. Step 4: Simplify right side
    66,638.68x = 3,928,759,658.22
  5. Step 5: Solve for x
    x = 3,928,759,658.22/66,638.68
  6. Step 6: Final answer
    x = 58,956.14

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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.