Home / 85,830,010.80-118,757,318-74,839,662.40

Finding the Fourth Proportional to 85,830,010.80, 118,757,318 and 74,839,662.40

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Solution

The fourth proportional to 85,830,010.80, 118,757,318 and 74,839,662.40 is: 103,550,698.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,830,010.80 : 118,757,318 = 74,839,662.40 : x
  2. Step 2: Convert to fraction form
    85,830,010.80/118,757,318 = 74,839,662.40/x
  3. Step 3: Cross multiply
    85,830,010.80x = 118,757,318 × 74,839,662.40
  4. Step 4: Simplify right side
    85,830,010.80x = 8,887,757,586,649,444
  5. Step 5: Solve for x
    x = 8,887,757,586,649,444/85,830,010.80
  6. Step 6: Final answer
    x = 103,550,698.69

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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.