Home / 85,609.04-118,253.35-65,711.79

Finding the Fourth Proportional to 85,609.04, 118,253.35 and 65,711.79

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Solution

The fourth proportional to 85,609.04, 118,253.35 and 65,711.79 is: 90,768.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,609.04 : 118,253.35 = 65,711.79 : x
  2. Step 2: Convert to fraction form
    85,609.04/118,253.35 = 65,711.79/x
  3. Step 3: Cross multiply
    85,609.04x = 118,253.35 × 65,711.79
  4. Step 4: Simplify right side
    85,609.04x = 7,770,639,384.14
  5. Step 5: Solve for x
    x = 7,770,639,384.14/85,609.04
  6. Step 6: Final answer
    x = 90,768.92

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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.