Home / 285,050.20-427,599.78-74,688.16

Finding the Fourth Proportional to 285,050.20, 427,599.78 and 74,688.16

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Solution

The fourth proportional to 285,050.20, 427,599.78 and 74,688.16 is: 112,038.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,050.20 : 427,599.78 = 74,688.16 : x
  2. Step 2: Convert to fraction form
    285,050.20/427,599.78 = 74,688.16/x
  3. Step 3: Cross multiply
    285,050.20x = 427,599.78 × 74,688.16
  4. Step 4: Simplify right side
    285,050.20x = 31,936,640,784.60
  5. Step 5: Solve for x
    x = 31,936,640,784.60/285,050.20
  6. Step 6: Final answer
    x = 112,038.65

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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.