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Finding the Fourth Proportional to 66,519,101.70, 99,778,652.55 and 66,519,101.70

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Solution

The fourth proportional to 66,519,101.70, 99,778,652.55 and 66,519,101.70 is: 99,778,652.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,519,101.70 : 99,778,652.55 = 66,519,101.70 : x
  2. Step 2: Convert to fraction form
    66,519,101.70/99,778,652.55 = 66,519,101.70/x
  3. Step 3: Cross multiply
    66,519,101.70x = 99,778,652.55 × 66,519,101.70
  4. Step 4: Simplify right side
    66,519,101.70x = 6,637,186,336,462,414
  5. Step 5: Solve for x
    x = 6,637,186,336,462,414/66,519,101.70
  6. Step 6: Final answer
    x = 99,778,652.55

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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.