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Finding the Fourth Proportional to 56,409.39, 77,850.42 and 31,258.89

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Solution

The fourth proportional to 56,409.39, 77,850.42 and 31,258.89 is: 43,140.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,409.39 : 77,850.42 = 31,258.89 : x
  2. Step 2: Convert to fraction form
    56,409.39/77,850.42 = 31,258.89/x
  3. Step 3: Cross multiply
    56,409.39x = 77,850.42 × 31,258.89
  4. Step 4: Simplify right side
    56,409.39x = 2,433,517,715.23
  5. Step 5: Solve for x
    x = 2,433,517,715.23/56,409.39
  6. Step 6: Final answer
    x = 43,140.29

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1.5x scale

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.