Home / 85,468,613.75-128,330,991.46-73,989,488.15

Finding the Fourth Proportional to 85,468,613.75, 128,330,991.46 and 73,989,488.15

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Solution

The fourth proportional to 85,468,613.75, 128,330,991.46 and 73,989,488.15 is: 111,095,102.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,468,613.75 : 128,330,991.46 = 73,989,488.15 : x
  2. Step 2: Convert to fraction form
    85,468,613.75/128,330,991.46 = 73,989,488.15/x
  3. Step 3: Cross multiply
    85,468,613.75x = 128,330,991.46 × 73,989,488.15
  4. Step 4: Simplify right side
    85,468,613.75x = 9,495,144,371,907,422
  5. Step 5: Solve for x
    x = 9,495,144,371,907,422/85,468,613.75
  6. Step 6: Final answer
    x = 111,095,102.11

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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.