Home / 85,715.18-118,284.32-47,473.20

Finding the Fourth Proportional to 85,715.18, 118,284.32 and 47,473.20

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Solution

The fourth proportional to 85,715.18, 118,284.32 and 47,473.20 is: 65,511.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,715.18 : 118,284.32 = 47,473.20 : x
  2. Step 2: Convert to fraction form
    85,715.18/118,284.32 = 47,473.20/x
  3. Step 3: Cross multiply
    85,715.18x = 118,284.32 × 47,473.20
  4. Step 4: Simplify right side
    85,715.18x = 5,615,334,351.44
  5. Step 5: Solve for x
    x = 5,615,334,351.44/85,715.18
  6. Step 6: Final answer
    x = 65,511.55

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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.