Home / 84,742.98-127,113.53-20,701.68

Finding the Fourth Proportional to 84,742.98, 127,113.53 and 20,701.68

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Solution

The fourth proportional to 84,742.98, 127,113.53 and 20,701.68 is: 31,052.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,742.98 : 127,113.53 = 20,701.68 : x
  2. Step 2: Convert to fraction form
    84,742.98/127,113.53 = 20,701.68/x
  3. Step 3: Cross multiply
    84,742.98x = 127,113.53 × 20,701.68
  4. Step 4: Simplify right side
    84,742.98x = 2,631,463,518.22
  5. Step 5: Solve for x
    x = 2,631,463,518.22/84,742.98
  6. Step 6: Final answer
    x = 31,052.29

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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.