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Finding the Fourth Proportional to 66,457.40, 99,702.50 and 19,710.27

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Solution

The fourth proportional to 66,457.40, 99,702.50 and 19,710.27 is: 29,570.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,457.40 : 99,702.50 = 19,710.27 : x
  2. Step 2: Convert to fraction form
    66,457.40/99,702.50 = 19,710.27/x
  3. Step 3: Cross multiply
    66,457.40x = 99,702.50 × 19,710.27
  4. Step 4: Simplify right side
    66,457.40x = 1,965,163,096.12
  5. Step 5: Solve for x
    x = 1,965,163,096.12/66,457.40
  6. Step 6: Final answer
    x = 29,570.27

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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.