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Finding the Fourth Proportional to 81,653.40, 112,681.74 and 45,846.84

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Solution

The fourth proportional to 81,653.40, 112,681.74 and 45,846.84 is: 63,268.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,653.40 : 112,681.74 = 45,846.84 : x
  2. Step 2: Convert to fraction form
    81,653.40/112,681.74 = 45,846.84/x
  3. Step 3: Cross multiply
    81,653.40x = 112,681.74 × 45,846.84
  4. Step 4: Simplify right side
    81,653.40x = 5,166,101,704.70
  5. Step 5: Solve for x
    x = 5,166,101,704.70/81,653.40
  6. Step 6: Final answer
    x = 63,268.67

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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.