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Finding the Fourth Proportional to 56,163,607.80, 84,245,411.70 and 45,959,940.60

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Solution

The fourth proportional to 56,163,607.80, 84,245,411.70 and 45,959,940.60 is: 68,939,910.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,163,607.80 : 84,245,411.70 = 45,959,940.60 : x
  2. Step 2: Convert to fraction form
    56,163,607.80/84,245,411.70 = 45,959,940.60/x
  3. Step 3: Cross multiply
    56,163,607.80x = 84,245,411.70 × 45,959,940.60
  4. Step 4: Simplify right side
    56,163,607.80x = 3,871,914,117,554,545.50
  5. Step 5: Solve for x
    x = 3,871,914,117,554,545.50/56,163,607.80
  6. Step 6: Final answer
    x = 68,939,910.90

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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.