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Finding the Fourth Proportional to 77,878.64, 107,460.33 and 43,885.37

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Solution

The fourth proportional to 77,878.64, 107,460.33 and 43,885.37 is: 60,554.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,878.64 : 107,460.33 = 43,885.37 : x
  2. Step 2: Convert to fraction form
    77,878.64/107,460.33 = 43,885.37/x
  3. Step 3: Cross multiply
    77,878.64x = 107,460.33 × 43,885.37
  4. Step 4: Simplify right side
    77,878.64x = 4,715,936,342.37
  5. Step 5: Solve for x
    x = 4,715,936,342.37/77,878.64
  6. Step 6: Final answer
    x = 60,554.94

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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.