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Finding the Fourth Proportional to 60,679,901.70, 91,019,852.55 and 40,272,567.30

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Solution

The fourth proportional to 60,679,901.70, 91,019,852.55 and 40,272,567.30 is: 60,408,850.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,679,901.70 : 91,019,852.55 = 40,272,567.30 : x
  2. Step 2: Convert to fraction form
    60,679,901.70/91,019,852.55 = 40,272,567.30/x
  3. Step 3: Cross multiply
    60,679,901.70x = 91,019,852.55 × 40,272,567.30
  4. Step 4: Simplify right side
    60,679,901.70x = 3,665,603,137,455,951
  5. Step 5: Solve for x
    x = 3,665,603,137,455,951/60,679,901.70
  6. Step 6: Final answer
    x = 60,408,850.95

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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.