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Finding the Fourth Proportional to 61,252.50, 91,878.75 and 19,699.50

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Solution

The fourth proportional to 61,252.50, 91,878.75 and 19,699.50 is: 29,549.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,252.50 : 91,878.75 = 19,699.50 : x
  2. Step 2: Convert to fraction form
    61,252.50/91,878.75 = 19,699.50/x
  3. Step 3: Cross multiply
    61,252.50x = 91,878.75 × 19,699.50
  4. Step 4: Simplify right side
    61,252.50x = 1,809,965,435.63
  5. Step 5: Solve for x
    x = 1,809,965,435.63/61,252.50
  6. Step 6: Final answer
    x = 29,549.25

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1.5x scale

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.