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Finding the Fourth Proportional to 66,208.32, 91,362.72 and 37,913.28

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Solution

The fourth proportional to 66,208.32, 91,362.72 and 37,913.28 is: 52,317.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,208.32 : 91,362.72 = 37,913.28 : x
  2. Step 2: Convert to fraction form
    66,208.32/91,362.72 = 37,913.28/x
  3. Step 3: Cross multiply
    66,208.32x = 91,362.72 × 37,913.28
  4. Step 4: Simplify right side
    66,208.32x = 3,463,860,384.92
  5. Step 5: Solve for x
    x = 3,463,860,384.92/66,208.32
  6. Step 6: Final answer
    x = 52,317.60

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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.