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Finding the Fourth Proportional to 113,018, 155,969.70 and 62,717

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Solution

The fourth proportional to 113,018, 155,969.70 and 62,717 is: 86,552.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,018 : 155,969.70 = 62,717 : x
  2. Step 2: Convert to fraction form
    113,018/155,969.70 = 62,717/x
  3. Step 3: Cross multiply
    113,018x = 155,969.70 × 62,717
  4. Step 4: Simplify right side
    113,018x = 9,781,951,674.90
  5. Step 5: Solve for x
    x = 9,781,951,674.90/113,018
  6. Step 6: Final answer
    x = 86,552.16

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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.