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Finding the Fourth Proportional to 76,988, 115,485.36 and 24,401.36

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Solution

The fourth proportional to 76,988, 115,485.36 and 24,401.36 is: 36,603.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,988 : 115,485.36 = 24,401.36 : x
  2. Step 2: Convert to fraction form
    76,988/115,485.36 = 24,401.36/x
  3. Step 3: Cross multiply
    76,988x = 115,485.36 × 24,401.36
  4. Step 4: Simplify right side
    76,988x = 2,817,999,844.09
  5. Step 5: Solve for x
    x = 2,817,999,844.09/76,988
  6. Step 6: Final answer
    x = 36,603.10

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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.