Home / 85,669.78-118,217.73-47,938.90

Finding the Fourth Proportional to 85,669.78, 118,217.73 and 47,938.90

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Solution

The fourth proportional to 85,669.78, 118,217.73 and 47,938.90 is: 66,152.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,669.78 : 118,217.73 = 47,938.90 : x
  2. Step 2: Convert to fraction form
    85,669.78/118,217.73 = 47,938.90/x
  3. Step 3: Cross multiply
    85,669.78x = 118,217.73 × 47,938.90
  4. Step 4: Simplify right side
    85,669.78x = 5,667,227,936.70
  5. Step 5: Solve for x
    x = 5,667,227,936.70/85,669.78
  6. Step 6: Final answer
    x = 66,152.01

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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.