Home / 85,720.76-118,269.06-55,458.16

Finding the Fourth Proportional to 85,720.76, 118,269.06 and 55,458.16

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Solution

The fourth proportional to 85,720.76, 118,269.06 and 55,458.16 is: 76,515.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,720.76 : 118,269.06 = 55,458.16 : x
  2. Step 2: Convert to fraction form
    85,720.76/118,269.06 = 55,458.16/x
  3. Step 3: Cross multiply
    85,720.76x = 118,269.06 × 55,458.16
  4. Step 4: Simplify right side
    85,720.76x = 6,558,984,452.53
  5. Step 5: Solve for x
    x = 6,558,984,452.53/85,720.76
  6. Step 6: Final answer
    x = 76,515.71

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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.