Home / 105,586.63-145,709.59-57,841.70

Finding the Fourth Proportional to 105,586.63, 145,709.59 and 57,841.70

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Solution

The fourth proportional to 105,586.63, 145,709.59 and 57,841.70 is: 79,821.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,586.63 : 145,709.59 = 57,841.70 : x
  2. Step 2: Convert to fraction form
    105,586.63/145,709.59 = 57,841.70/x
  3. Step 3: Cross multiply
    105,586.63x = 145,709.59 × 57,841.70
  4. Step 4: Simplify right side
    105,586.63x = 8,428,090,391.90
  5. Step 5: Solve for x
    x = 8,428,090,391.90/105,586.63
  6. Step 6: Final answer
    x = 79,821.57

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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.