Home / 77,888,643.67-116,829,717.81-20,379,641.59

Finding the Fourth Proportional to 77,888,643.67, 116,829,717.81 and 20,379,641.59

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Solution

The fourth proportional to 77,888,643.67, 116,829,717.81 and 20,379,641.59 is: 30,568,612.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,888,643.67 : 116,829,717.81 = 20,379,641.59 : x
  2. Step 2: Convert to fraction form
    77,888,643.67/116,829,717.81 = 20,379,641.59/x
  3. Step 3: Cross multiply
    77,888,643.67x = 116,829,717.81 × 20,379,641.59
  4. Step 4: Simplify right side
    77,888,643.67x = 2,380,947,775,798,463.50
  5. Step 5: Solve for x
    x = 2,380,947,775,798,463.50/77,888,643.67
  6. Step 6: Final answer
    x = 30,568,612.62

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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.