Home / 66,447.14-99,670.71-31,390.34

Finding the Fourth Proportional to 66,447.14, 99,670.71 and 31,390.34

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Solution

The fourth proportional to 66,447.14, 99,670.71 and 31,390.34 is: 47,085.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,447.14 : 99,670.71 = 31,390.34 : x
  2. Step 2: Convert to fraction form
    66,447.14/99,670.71 = 31,390.34/x
  3. Step 3: Cross multiply
    66,447.14x = 99,670.71 × 31,390.34
  4. Step 4: Simplify right side
    66,447.14x = 3,128,697,474.94
  5. Step 5: Solve for x
    x = 3,128,697,474.94/66,447.14
  6. Step 6: Final answer
    x = 47,085.51

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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.