Home / 66,084.78-90,966.51-57,038.84

Finding the Fourth Proportional to 66,084.78, 90,966.51 and 57,038.84

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Solution

The fourth proportional to 66,084.78, 90,966.51 and 57,038.84 is: 78,514.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,084.78 : 90,966.51 = 57,038.84 : x
  2. Step 2: Convert to fraction form
    66,084.78/90,966.51 = 57,038.84/x
  3. Step 3: Cross multiply
    66,084.78x = 90,966.51 × 57,038.84
  4. Step 4: Simplify right side
    66,084.78x = 5,188,624,370.05
  5. Step 5: Solve for x
    x = 5,188,624,370.05/66,084.78
  6. Step 6: Final answer
    x = 78,514.67

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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.