Home / 72,888,400.80-100,586,448-39,848,721.12

Finding the Fourth Proportional to 72,888,400.80, 100,586,448 and 39,848,721.12

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Solution

The fourth proportional to 72,888,400.80, 100,586,448 and 39,848,721.12 is: 54,991,483.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,888,400.80 : 100,586,448 = 39,848,721.12 : x
  2. Step 2: Convert to fraction form
    72,888,400.80/100,586,448 = 39,848,721.12/x
  3. Step 3: Cross multiply
    72,888,400.80x = 100,586,448 × 39,848,721.12
  4. Step 4: Simplify right side
    72,888,400.80x = 4,008,241,314,803,381.50
  5. Step 5: Solve for x
    x = 4,008,241,314,803,381.50/72,888,400.80
  6. Step 6: Final answer
    x = 54,991,483.84

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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.