Home / 72,724,773.92-100,362,317.49-39,687,151.84

Finding the Fourth Proportional to 72,724,773.92, 100,362,317.49 and 39,687,151.84

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Solution

The fourth proportional to 72,724,773.92, 100,362,317.49 and 39,687,151.84 is: 54,769,431.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,724,773.92 : 100,362,317.49 = 39,687,151.84 : x
  2. Step 2: Convert to fraction form
    72,724,773.92/100,362,317.49 = 39,687,151.84/x
  3. Step 3: Cross multiply
    72,724,773.92x = 100,362,317.49 × 39,687,151.84
  4. Step 4: Simplify right side
    72,724,773.92x = 3,983,094,532,989,011.50
  5. Step 5: Solve for x
    x = 3,983,094,532,989,011.50/72,724,773.92
  6. Step 6: Final answer
    x = 54,769,431.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.