Home / 76,778,986.60-114,944,531.10-68,716,829.80

Finding the Fourth Proportional to 76,778,986.60, 114,944,531.10 and 68,716,829.80

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Solution

The fourth proportional to 76,778,986.60, 114,944,531.10 and 68,716,829.80 is: 102,874,811.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,778,986.60 : 114,944,531.10 = 68,716,829.80 : x
  2. Step 2: Convert to fraction form
    76,778,986.60/114,944,531.10 = 68,716,829.80/x
  3. Step 3: Cross multiply
    76,778,986.60x = 114,944,531.10 × 68,716,829.80
  4. Step 4: Simplify right side
    76,778,986.60x = 7,898,623,780,039,506
  5. Step 5: Solve for x
    x = 7,898,623,780,039,506/76,778,986.60
  6. Step 6: Final answer
    x = 102,874,811.58

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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.