Home / 85,683.78-118,229.56-53,830.13

Finding the Fourth Proportional to 85,683.78, 118,229.56 and 53,830.13

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Solution

The fourth proportional to 85,683.78, 118,229.56 and 53,830.13 is: 74,276.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,683.78 : 118,229.56 = 53,830.13 : x
  2. Step 2: Convert to fraction form
    85,683.78/118,229.56 = 53,830.13/x
  3. Step 3: Cross multiply
    85,683.78x = 118,229.56 × 53,830.13
  4. Step 4: Simplify right side
    85,683.78x = 6,364,311,858.92
  5. Step 5: Solve for x
    x = 6,364,311,858.92/85,683.78
  6. Step 6: Final answer
    x = 74,276.74

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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.