Home / 83,431.81-115,136-45,705.25

Finding the Fourth Proportional to 83,431.81, 115,136 and 45,705.25

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Solution

The fourth proportional to 83,431.81, 115,136 and 45,705.25 is: 63,073.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,431.81 : 115,136 = 45,705.25 : x
  2. Step 2: Convert to fraction form
    83,431.81/115,136 = 45,705.25/x
  3. Step 3: Cross multiply
    83,431.81x = 115,136 × 45,705.25
  4. Step 4: Simplify right side
    83,431.81x = 5,262,319,664
  5. Step 5: Solve for x
    x = 5,262,319,664/83,431.81
  6. Step 6: Final answer
    x = 63,073.30

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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.