Home / 85,619.09-118,154.50-47,380.25

Finding the Fourth Proportional to 85,619.09, 118,154.50 and 47,380.25

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Solution

The fourth proportional to 85,619.09, 118,154.50 and 47,380.25 is: 65,384.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,619.09 : 118,154.50 = 47,380.25 : x
  2. Step 2: Convert to fraction form
    85,619.09/118,154.50 = 47,380.25/x
  3. Step 3: Cross multiply
    85,619.09x = 118,154.50 × 47,380.25
  4. Step 4: Simplify right side
    85,619.09x = 5,598,189,925.56
  5. Step 5: Solve for x
    x = 5,598,189,925.56/85,619.09
  6. Step 6: Final answer
    x = 65,384.83

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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.