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Finding the Fourth Proportional to 85,701.70, 128,552.55 and 83,952.10

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Solution

The fourth proportional to 85,701.70, 128,552.55 and 83,952.10 is: 125,928.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,701.70 : 128,552.55 = 83,952.10 : x
  2. Step 2: Convert to fraction form
    85,701.70/128,552.55 = 83,952.10/x
  3. Step 3: Cross multiply
    85,701.70x = 128,552.55 × 83,952.10
  4. Step 4: Simplify right side
    85,701.70x = 10,792,256,532.86
  5. Step 5: Solve for x
    x = 10,792,256,532.86/85,701.70
  6. Step 6: Final answer
    x = 125,928.15

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.