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Finding the Fourth Proportional to 66,374.80, 99,562.16 and 19,624

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Solution

The fourth proportional to 66,374.80, 99,562.16 and 19,624 is: 29,435.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,374.80 : 99,562.16 = 19,624 : x
  2. Step 2: Convert to fraction form
    66,374.80/99,562.16 = 19,624/x
  3. Step 3: Cross multiply
    66,374.80x = 99,562.16 × 19,624
  4. Step 4: Simplify right side
    66,374.80x = 1,953,807,827.84
  5. Step 5: Solve for x
    x = 1,953,807,827.84/66,374.80
  6. Step 6: Final answer
    x = 29,435.99

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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.