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Finding the Fourth Proportional to 83,627.84, 115,406.25 and 45,901.28

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Solution

The fourth proportional to 83,627.84, 115,406.25 and 45,901.28 is: 63,343.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,627.84 : 115,406.25 = 45,901.28 : x
  2. Step 2: Convert to fraction form
    83,627.84/115,406.25 = 45,901.28/x
  3. Step 3: Cross multiply
    83,627.84x = 115,406.25 × 45,901.28
  4. Step 4: Simplify right side
    83,627.84x = 5,297,294,595
  5. Step 5: Solve for x
    x = 5,297,294,595/83,627.84
  6. Step 6: Final answer
    x = 63,343.67

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1.5x scale

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.