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Finding the Fourth Proportional to 84,047.30, 115,984.54 and 45,806.84

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Solution

The fourth proportional to 84,047.30, 115,984.54 and 45,806.84 is: 63,213.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,047.30 : 115,984.54 = 45,806.84 : x
  2. Step 2: Convert to fraction form
    84,047.30/115,984.54 = 45,806.84/x
  3. Step 3: Cross multiply
    84,047.30x = 115,984.54 × 45,806.84
  4. Step 4: Simplify right side
    84,047.30x = 5,312,885,277.22
  5. Step 5: Solve for x
    x = 5,312,885,277.22/84,047.30
  6. Step 6: Final answer
    x = 63,213.04

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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.