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Finding the Fourth Proportional to 72,580,807.80, 108,871,211.70 and 54,664,903.80

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Solution

The fourth proportional to 72,580,807.80, 108,871,211.70 and 54,664,903.80 is: 81,997,355.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,580,807.80 : 108,871,211.70 = 54,664,903.80 : x
  2. Step 2: Convert to fraction form
    72,580,807.80/108,871,211.70 = 54,664,903.80/x
  3. Step 3: Cross multiply
    72,580,807.80x = 108,871,211.70 × 54,664,903.80
  4. Step 4: Simplify right side
    72,580,807.80x = 5,951,434,314,169,934
  5. Step 5: Solve for x
    x = 5,951,434,314,169,934/72,580,807.80
  6. Step 6: Final answer
    x = 81,997,355.70

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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.