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Finding the Fourth Proportional to 89,076.80, 122,866.80 and 57,285.92

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Solution

The fourth proportional to 89,076.80, 122,866.80 and 57,285.92 is: 79,016.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,076.80 : 122,866.80 = 57,285.92 : x
  2. Step 2: Convert to fraction form
    89,076.80/122,866.80 = 57,285.92/x
  3. Step 3: Cross multiply
    89,076.80x = 122,866.80 × 57,285.92
  4. Step 4: Simplify right side
    89,076.80x = 7,038,537,675.46
  5. Step 5: Solve for x
    x = 7,038,537,675.46/89,076.80
  6. Step 6: Final answer
    x = 79,016.51

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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.