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Finding the Fourth Proportional to 85,713.40, 118,223.76 and 73,756.18

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Solution

The fourth proportional to 85,713.40, 118,223.76 and 73,756.18 is: 101,731.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,713.40 : 118,223.76 = 73,756.18 : x
  2. Step 2: Convert to fraction form
    85,713.40/118,223.76 = 73,756.18/x
  3. Step 3: Cross multiply
    85,713.40x = 118,223.76 × 73,756.18
  4. Step 4: Simplify right side
    85,713.40x = 8,719,732,922.84
  5. Step 5: Solve for x
    x = 8,719,732,922.84/85,713.40
  6. Step 6: Final answer
    x = 101,731.27

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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.