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Finding the Fourth Proportional to 66,460.56, 99,673.80 and 19,702.50

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Solution

The fourth proportional to 66,460.56, 99,673.80 and 19,702.50 is: 29,548.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,460.56 : 99,673.80 = 19,702.50 : x
  2. Step 2: Convert to fraction form
    66,460.56/99,673.80 = 19,702.50/x
  3. Step 3: Cross multiply
    66,460.56x = 99,673.80 × 19,702.50
  4. Step 4: Simplify right side
    66,460.56x = 1,963,823,044.50
  5. Step 5: Solve for x
    x = 1,963,823,044.50/66,460.56
  6. Step 6: Final answer
    x = 29,548.70

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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.