Home / 105,689.09-145,847.07-57,941.39

Finding the Fourth Proportional to 105,689.09, 145,847.07 and 57,941.39

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Solution

The fourth proportional to 105,689.09, 145,847.07 and 57,941.39 is: 79,956.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,689.09 : 145,847.07 = 57,941.39 : x
  2. Step 2: Convert to fraction form
    105,689.09/145,847.07 = 57,941.39/x
  3. Step 3: Cross multiply
    105,689.09x = 145,847.07 × 57,941.39
  4. Step 4: Simplify right side
    105,689.09x = 8,450,581,233.99
  5. Step 5: Solve for x
    x = 8,450,581,233.99/105,689.09
  6. Step 6: Final answer
    x = 79,956.99

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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.