Home / 105,676.17-145,835.91-57,931.29

Finding the Fourth Proportional to 105,676.17, 145,835.91 and 57,931.29

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Solution

The fourth proportional to 105,676.17, 145,835.91 and 57,931.29 is: 79,946.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,676.17 : 145,835.91 = 57,931.29 : x
  2. Step 2: Convert to fraction form
    105,676.17/145,835.91 = 57,931.29/x
  3. Step 3: Cross multiply
    105,676.17x = 145,835.91 × 57,931.29
  4. Step 4: Simplify right side
    105,676.17x = 8,448,462,394.62
  5. Step 5: Solve for x
    x = 8,448,462,394.62/105,676.17
  6. Step 6: Final answer
    x = 79,946.71

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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.