Home / 66,445.64-99,668.46-31,388.84

Finding the Fourth Proportional to 66,445.64, 99,668.46 and 31,388.84

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Solution

The fourth proportional to 66,445.64, 99,668.46 and 31,388.84 is: 47,083.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,445.64 : 99,668.46 = 31,388.84 : x
  2. Step 2: Convert to fraction form
    66,445.64/99,668.46 = 31,388.84/x
  3. Step 3: Cross multiply
    66,445.64x = 99,668.46 × 31,388.84
  4. Step 4: Simplify right side
    66,445.64x = 3,128,477,343.99
  5. Step 5: Solve for x
    x = 3,128,477,343.99/66,445.64
  6. Step 6: Final answer
    x = 47,083.26

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.