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Finding the Fourth Proportional to 66,572.68, 91,870.92 and 37,890.93

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Solution

The fourth proportional to 66,572.68, 91,870.92 and 37,890.93 is: 52,289.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,572.68 : 91,870.92 = 37,890.93 : x
  2. Step 2: Convert to fraction form
    66,572.68/91,870.92 = 37,890.93/x
  3. Step 3: Cross multiply
    66,572.68x = 91,870.92 × 37,890.93
  4. Step 4: Simplify right side
    66,572.68x = 3,481,074,598.76
  5. Step 5: Solve for x
    x = 3,481,074,598.76/66,572.68
  6. Step 6: Final answer
    x = 52,289.84

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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.