Home / 78,732,004.55-118,098,006.83-39,989,955.65

Finding the Fourth Proportional to 78,732,004.55, 118,098,006.83 and 39,989,955.65

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Solution

The fourth proportional to 78,732,004.55, 118,098,006.83 and 39,989,955.65 is: 59,984,933.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,732,004.55 : 118,098,006.83 = 39,989,955.65 : x
  2. Step 2: Convert to fraction form
    78,732,004.55/118,098,006.83 = 39,989,955.65/x
  3. Step 3: Cross multiply
    78,732,004.55x = 118,098,006.83 × 39,989,955.65
  4. Step 4: Simplify right side
    78,732,004.55x = 4,722,734,055,285,147
  5. Step 5: Solve for x
    x = 4,722,734,055,285,147/78,732,004.55
  6. Step 6: Final answer
    x = 59,984,933.48

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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.