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Finding the Fourth Proportional to 66,485.47, 99,746.97 and 27,070.87

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Solution

The fourth proportional to 66,485.47, 99,746.97 and 27,070.87 is: 40,613.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,485.47 : 99,746.97 = 27,070.87 : x
  2. Step 2: Convert to fraction form
    66,485.47/99,746.97 = 27,070.87/x
  3. Step 3: Cross multiply
    66,485.47x = 99,746.97 × 27,070.87
  4. Step 4: Simplify right side
    66,485.47x = 2,700,237,257.76
  5. Step 5: Solve for x
    x = 2,700,237,257.76/66,485.47
  6. Step 6: Final answer
    x = 40,613.95

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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.