Home / 85,515.63-118,049.04-65,373.36

Finding the Fourth Proportional to 85,515.63, 118,049.04 and 65,373.36

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Solution

The fourth proportional to 85,515.63, 118,049.04 and 65,373.36 is: 90,243.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,515.63 : 118,049.04 = 65,373.36 : x
  2. Step 2: Convert to fraction form
    85,515.63/118,049.04 = 65,373.36/x
  3. Step 3: Cross multiply
    85,515.63x = 118,049.04 × 65,373.36
  4. Step 4: Simplify right side
    85,515.63x = 7,717,262,389.57
  5. Step 5: Solve for x
    x = 7,717,262,389.57/85,515.63
  6. Step 6: Final answer
    x = 90,243.88

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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.