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Finding the Fourth Proportional to 64,968, 97,454.88 and 21,192

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Solution

The fourth proportional to 64,968, 97,454.88 and 21,192 is: 31,788.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,968 : 97,454.88 = 21,192 : x
  2. Step 2: Convert to fraction form
    64,968/97,454.88 = 21,192/x
  3. Step 3: Cross multiply
    64,968x = 97,454.88 × 21,192
  4. Step 4: Simplify right side
    64,968x = 2,065,263,816.96
  5. Step 5: Solve for x
    x = 2,065,263,816.96/64,968
  6. Step 6: Final answer
    x = 31,788.94

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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.