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Finding the Fourth Proportional to 72,603,353.70, 108,905,030.55 and 34,339,601.70

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Solution

The fourth proportional to 72,603,353.70, 108,905,030.55 and 34,339,601.70 is: 51,509,402.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,603,353.70 : 108,905,030.55 = 34,339,601.70 : x
  2. Step 2: Convert to fraction form
    72,603,353.70/108,905,030.55 = 34,339,601.70/x
  3. Step 3: Cross multiply
    72,603,353.70x = 108,905,030.55 × 34,339,601.70
  4. Step 4: Simplify right side
    72,603,353.70x = 3,739,755,372,213,332
  5. Step 5: Solve for x
    x = 3,739,755,372,213,332/72,603,353.70
  6. Step 6: Final answer
    x = 51,509,402.55

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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.