Home / 85,460.16-117,867.78-79,730.63

Finding the Fourth Proportional to 85,460.16, 117,867.78 and 79,730.63

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Solution

The fourth proportional to 85,460.16, 117,867.78 and 79,730.63 is: 109,965.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,460.16 : 117,867.78 = 79,730.63 : x
  2. Step 2: Convert to fraction form
    85,460.16/117,867.78 = 79,730.63/x
  3. Step 3: Cross multiply
    85,460.16x = 117,867.78 × 79,730.63
  4. Step 4: Simplify right side
    85,460.16x = 9,397,671,766.76
  5. Step 5: Solve for x
    x = 9,397,671,766.76/85,460.16
  6. Step 6: Final answer
    x = 109,965.53

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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.