Home / 72,300,923.80-99,775,161.12-39,705,875.80

Finding the Fourth Proportional to 72,300,923.80, 99,775,161.12 and 39,705,875.80

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Solution

The fourth proportional to 72,300,923.80, 99,775,161.12 and 39,705,875.80 is: 54,794,046.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,300,923.80 : 99,775,161.12 = 39,705,875.80 : x
  2. Step 2: Convert to fraction form
    72,300,923.80/99,775,161.12 = 39,705,875.80/x
  3. Step 3: Cross multiply
    72,300,923.80x = 99,775,161.12 × 39,705,875.80
  4. Step 4: Simplify right side
    72,300,923.80x = 3,961,660,155,355,709
  5. Step 5: Solve for x
    x = 3,961,660,155,355,709/72,300,923.80
  6. Step 6: Final answer
    x = 54,794,046.15

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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.