Home / 72,145,219.89-99,566,702.03-39,556,470.45

Finding the Fourth Proportional to 72,145,219.89, 99,566,702.03 and 39,556,470.45

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Solution

The fourth proportional to 72,145,219.89, 99,566,702.03 and 39,556,470.45 is: 54,591,382.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,145,219.89 : 99,566,702.03 = 39,556,470.45 : x
  2. Step 2: Convert to fraction form
    72,145,219.89/99,566,702.03 = 39,556,470.45/x
  3. Step 3: Cross multiply
    72,145,219.89x = 99,566,702.03 × 39,556,470.45
  4. Step 4: Simplify right side
    72,145,219.89x = 3,938,507,306,455,868
  5. Step 5: Solve for x
    x = 3,938,507,306,455,868/72,145,219.89
  6. Step 6: Final answer
    x = 54,591,382.66

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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.