Home / 81,905.55-113,064.53-55,063.63

Finding the Fourth Proportional to 81,905.55, 113,064.53 and 55,063.63

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Solution

The fourth proportional to 81,905.55, 113,064.53 and 55,063.63 is: 76,011.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,905.55 : 113,064.53 = 55,063.63 : x
  2. Step 2: Convert to fraction form
    81,905.55/113,064.53 = 55,063.63/x
  3. Step 3: Cross multiply
    81,905.55x = 113,064.53 × 55,063.63
  4. Step 4: Simplify right side
    81,905.55x = 6,225,743,018.38
  5. Step 5: Solve for x
    x = 6,225,743,018.38/81,905.55
  6. Step 6: Final answer
    x = 76,011.25

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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.