Home / 85,488.74-118,007.39-76,520.42

Finding the Fourth Proportional to 85,488.74, 118,007.39 and 76,520.42

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Solution

The fourth proportional to 85,488.74, 118,007.39 and 76,520.42 is: 105,627.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,488.74 : 118,007.39 = 76,520.42 : x
  2. Step 2: Convert to fraction form
    85,488.74/118,007.39 = 76,520.42/x
  3. Step 3: Cross multiply
    85,488.74x = 118,007.39 × 76,520.42
  4. Step 4: Simplify right side
    85,488.74x = 9,029,975,045.90
  5. Step 5: Solve for x
    x = 9,029,975,045.90/85,488.74
  6. Step 6: Final answer
    x = 105,627.65

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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.