Home / 105,560.30-145,673.20-57,813.77

Finding the Fourth Proportional to 105,560.30, 145,673.20 and 57,813.77

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Solution

The fourth proportional to 105,560.30, 145,673.20 and 57,813.77 is: 79,782.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,560.30 : 145,673.20 = 57,813.77 : x
  2. Step 2: Convert to fraction form
    105,560.30/145,673.20 = 57,813.77/x
  3. Step 3: Cross multiply
    105,560.30x = 145,673.20 × 57,813.77
  4. Step 4: Simplify right side
    105,560.30x = 8,421,916,007.06
  5. Step 5: Solve for x
    x = 8,421,916,007.06/105,560.30
  6. Step 6: Final answer
    x = 79,782.99

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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.