Home / 54,085.78-74,689.50-51,140.62

Finding the Fourth Proportional to 54,085.78, 74,689.50 and 51,140.62

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Solution

The fourth proportional to 54,085.78, 74,689.50 and 51,140.62 is: 70,622.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,085.78 : 74,689.50 = 51,140.62 : x
  2. Step 2: Convert to fraction form
    54,085.78/74,689.50 = 51,140.62/x
  3. Step 3: Cross multiply
    54,085.78x = 74,689.50 × 51,140.62
  4. Step 4: Simplify right side
    54,085.78x = 3,819,667,337.49
  5. Step 5: Solve for x
    x = 3,819,667,337.49/54,085.78
  6. Step 6: Final answer
    x = 70,622.40

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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.