Home / 76,621,845.60-114,932,768.40-72,842,709.60

Finding the Fourth Proportional to 76,621,845.60, 114,932,768.40 and 72,842,709.60

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Solution

The fourth proportional to 76,621,845.60, 114,932,768.40 and 72,842,709.60 is: 109,264,064.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,621,845.60 : 114,932,768.40 = 72,842,709.60 : x
  2. Step 2: Convert to fraction form
    76,621,845.60/114,932,768.40 = 72,842,709.60/x
  3. Step 3: Cross multiply
    76,621,845.60x = 114,932,768.40 × 72,842,709.60
  4. Step 4: Simplify right side
    76,621,845.60x = 8,372,014,272,085,256
  5. Step 5: Solve for x
    x = 8,372,014,272,085,256/76,621,845.60
  6. Step 6: Final answer
    x = 109,264,064.40

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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.