Home / 87,760,765.84-121,051,541.78-56,438,415.32

Finding the Fourth Proportional to 87,760,765.84, 121,051,541.78 and 56,438,415.32

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Solution

The fourth proportional to 87,760,765.84, 121,051,541.78 and 56,438,415.32 is: 77,847,511.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,760,765.84 : 121,051,541.78 = 56,438,415.32 : x
  2. Step 2: Convert to fraction form
    87,760,765.84/121,051,541.78 = 56,438,415.32/x
  3. Step 3: Cross multiply
    87,760,765.84x = 121,051,541.78 × 56,438,415.32
  4. Step 4: Simplify right side
    87,760,765.84x = 6,831,957,190,105,972
  5. Step 5: Solve for x
    x = 6,831,957,190,105,972/87,760,765.84
  6. Step 6: Final answer
    x = 77,847,511.07

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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.