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Finding the Fourth Proportional to 66,315.57, 99,473.30 and 19,564.77

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Solution

The fourth proportional to 66,315.57, 99,473.30 and 19,564.77 is: 29,347.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,315.57 : 99,473.30 = 19,564.77 : x
  2. Step 2: Convert to fraction form
    66,315.57/99,473.30 = 19,564.77/x
  3. Step 3: Cross multiply
    66,315.57x = 99,473.30 × 19,564.77
  4. Step 4: Simplify right side
    66,315.57x = 1,946,172,137.82
  5. Step 5: Solve for x
    x = 1,946,172,137.82/66,315.57
  6. Step 6: Final answer
    x = 29,347.14

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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.