Home / 66,623.64-91,931.78-42,782.61

Finding the Fourth Proportional to 66,623.64, 91,931.78 and 42,782.61

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Solution

The fourth proportional to 66,623.64, 91,931.78 and 42,782.61 is: 59,034.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,623.64 : 91,931.78 = 42,782.61 : x
  2. Step 2: Convert to fraction form
    66,623.64/91,931.78 = 42,782.61/x
  3. Step 3: Cross multiply
    66,623.64x = 91,931.78 × 42,782.61
  4. Step 4: Simplify right side
    66,623.64x = 3,933,081,276.43
  5. Step 5: Solve for x
    x = 3,933,081,276.43/66,623.64
  6. Step 6: Final answer
    x = 59,034.32

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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.