Home / 85,693.57-118,295.31-56,639.43

Finding the Fourth Proportional to 85,693.57, 118,295.31 and 56,639.43

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Solution

The fourth proportional to 85,693.57, 118,295.31 and 56,639.43 is: 78,187.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,693.57 : 118,295.31 = 56,639.43 : x
  2. Step 2: Convert to fraction form
    85,693.57/118,295.31 = 56,639.43/x
  3. Step 3: Cross multiply
    85,693.57x = 118,295.31 × 56,639.43
  4. Step 4: Simplify right side
    85,693.57x = 6,700,179,586.08
  5. Step 5: Solve for x
    x = 6,700,179,586.08/85,693.57
  6. Step 6: Final answer
    x = 78,187.66

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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.