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Finding the Fourth Proportional to 85,959.27, 128,938.33 and 46,765.50

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Solution

The fourth proportional to 85,959.27, 128,938.33 and 46,765.50 is: 70,147.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,959.27 : 128,938.33 = 46,765.50 : x
  2. Step 2: Convert to fraction form
    85,959.27/128,938.33 = 46,765.50/x
  3. Step 3: Cross multiply
    85,959.27x = 128,938.33 × 46,765.50
  4. Step 4: Simplify right side
    85,959.27x = 6,029,864,783.50
  5. Step 5: Solve for x
    x = 6,029,864,783.50/85,959.27
  6. Step 6: Final answer
    x = 70,147.93

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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.