Home / 85,865.58-118,357.59-67,686.66

Finding the Fourth Proportional to 85,865.58, 118,357.59 and 67,686.66

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Solution

The fourth proportional to 85,865.58, 118,357.59 and 67,686.66 is: 93,299.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,865.58 : 118,357.59 = 67,686.66 : x
  2. Step 2: Convert to fraction form
    85,865.58/118,357.59 = 67,686.66/x
  3. Step 3: Cross multiply
    85,865.58x = 118,357.59 × 67,686.66
  4. Step 4: Simplify right side
    85,865.58x = 8,011,229,255.08
  5. Step 5: Solve for x
    x = 8,011,229,255.08/85,865.58
  6. Step 6: Final answer
    x = 93,299.66

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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.