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Finding the Fourth Proportional to 74,487.48, 102,813.12 and 43,887.48

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Solution

The fourth proportional to 74,487.48, 102,813.12 and 43,887.48 is: 60,576.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,487.48 : 102,813.12 = 43,887.48 : x
  2. Step 2: Convert to fraction form
    74,487.48/102,813.12 = 43,887.48/x
  3. Step 3: Cross multiply
    74,487.48x = 102,813.12 × 43,887.48
  4. Step 4: Simplify right side
    74,487.48x = 4,512,208,747.74
  5. Step 5: Solve for x
    x = 4,512,208,747.74/74,487.48
  6. Step 6: Final answer
    x = 60,576.74

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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.