Home / 85,485.40-117,928.38-60,279.64

Finding the Fourth Proportional to 85,485.40, 117,928.38 and 60,279.64

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Solution

The fourth proportional to 85,485.40, 117,928.38 and 60,279.64 is: 83,156.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,485.40 : 117,928.38 = 60,279.64 : x
  2. Step 2: Convert to fraction form
    85,485.40/117,928.38 = 60,279.64/x
  3. Step 3: Cross multiply
    85,485.40x = 117,928.38 × 60,279.64
  4. Step 4: Simplify right side
    85,485.40x = 7,108,680,292.18
  5. Step 5: Solve for x
    x = 7,108,680,292.18/85,485.40
  6. Step 6: Final answer
    x = 83,156.66

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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.