Home / 81,135,142.32-111,968,575.75-46,331,071.23

Finding the Fourth Proportional to 81,135,142.32, 111,968,575.75 and 46,331,071.23

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Solution

The fourth proportional to 81,135,142.32, 111,968,575.75 and 46,331,071.23 is: 63,938,065.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,135,142.32 : 111,968,575.75 = 46,331,071.23 : x
  2. Step 2: Convert to fraction form
    81,135,142.32/111,968,575.75 = 46,331,071.23/x
  3. Step 3: Cross multiply
    81,135,142.32x = 111,968,575.75 × 46,331,071.23
  4. Step 4: Simplify right side
    81,135,142.32x = 5,187,624,058,811,853
  5. Step 5: Solve for x
    x = 5,187,624,058,811,853/81,135,142.32
  6. Step 6: Final answer
    x = 63,938,065.68

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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.