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Finding the Fourth Proportional to 66,570.71, 91,855.42 and 37,888.70

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Solution

The fourth proportional to 66,570.71, 91,855.42 and 37,888.70 is: 52,279.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,570.71 : 91,855.42 = 37,888.70 : x
  2. Step 2: Convert to fraction form
    66,570.71/91,855.42 = 37,888.70/x
  3. Step 3: Cross multiply
    66,570.71x = 91,855.42 × 37,888.70
  4. Step 4: Simplify right side
    66,570.71x = 3,480,282,586.67
  5. Step 5: Solve for x
    x = 3,480,282,586.67/66,570.71
  6. Step 6: Final answer
    x = 52,279.49

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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.