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Finding the Fourth Proportional to 66,804,818.70, 100,207,228.05 and 60,347,810.55

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Solution

The fourth proportional to 66,804,818.70, 100,207,228.05 and 60,347,810.55 is: 90,521,715.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,804,818.70 : 100,207,228.05 = 60,347,810.55 : x
  2. Step 2: Convert to fraction form
    66,804,818.70/100,207,228.05 = 60,347,810.55/x
  3. Step 3: Cross multiply
    66,804,818.70x = 100,207,228.05 × 60,347,810.55
  4. Step 4: Simplify right side
    66,804,818.70x = 6,047,286,814,102,045
  5. Step 5: Solve for x
    x = 6,047,286,814,102,045/66,804,818.70
  6. Step 6: Final answer
    x = 90,521,715.83

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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.