Home / 78,446.28-117,669.36-31,699.14

Finding the Fourth Proportional to 78,446.28, 117,669.36 and 31,699.14

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Solution

The fourth proportional to 78,446.28, 117,669.36 and 31,699.14 is: 47,548.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,446.28 : 117,669.36 = 31,699.14 : x
  2. Step 2: Convert to fraction form
    78,446.28/117,669.36 = 31,699.14/x
  3. Step 3: Cross multiply
    78,446.28x = 117,669.36 × 31,699.14
  4. Step 4: Simplify right side
    78,446.28x = 3,730,017,516.35
  5. Step 5: Solve for x
    x = 3,730,017,516.35/78,446.28
  6. Step 6: Final answer
    x = 47,548.69

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1.5x scale

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.