Home / 76,831,649.82-115,247,671.56-31,393,444.32

Finding the Fourth Proportional to 76,831,649.82, 115,247,671.56 and 31,393,444.32

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Solution

The fourth proportional to 76,831,649.82, 115,247,671.56 and 31,393,444.32 is: 47,090,246.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,831,649.82 : 115,247,671.56 = 31,393,444.32 : x
  2. Step 2: Convert to fraction form
    76,831,649.82/115,247,671.56 = 31,393,444.32/x
  3. Step 3: Cross multiply
    76,831,649.82x = 115,247,671.56 × 31,393,444.32
  4. Step 4: Simplify right side
    76,831,649.82x = 3,618,021,360,128,507.50
  5. Step 5: Solve for x
    x = 3,618,021,360,128,507.50/76,831,649.82
  6. Step 6: Final answer
    x = 47,090,246.90

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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.