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Finding the Fourth Proportional to 77,911.40, 116,895.90 and 25,322.60

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Solution

The fourth proportional to 77,911.40, 116,895.90 and 25,322.60 is: 37,993.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,911.40 : 116,895.90 = 25,322.60 : x
  2. Step 2: Convert to fraction form
    77,911.40/116,895.90 = 25,322.60/x
  3. Step 3: Cross multiply
    77,911.40x = 116,895.90 × 25,322.60
  4. Step 4: Simplify right side
    77,911.40x = 2,960,108,117.34
  5. Step 5: Solve for x
    x = 2,960,108,117.34/77,911.40
  6. Step 6: Final answer
    x = 37,993.26

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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.