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Finding the Fourth Proportional to 105,571.88, 145,689.23 and 57,826.94

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Solution

The fourth proportional to 105,571.88, 145,689.23 and 57,826.94 is: 79,801.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,571.88 : 145,689.23 = 57,826.94 : x
  2. Step 2: Convert to fraction form
    105,571.88/145,689.23 = 57,826.94/x
  3. Step 3: Cross multiply
    105,571.88x = 145,689.23 × 57,826.94
  4. Step 4: Simplify right side
    105,571.88x = 8,424,762,436.94
  5. Step 5: Solve for x
    x = 8,424,762,436.94/105,571.88
  6. Step 6: Final answer
    x = 79,801.20

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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.