Home / 105,429.83-145,495.26-57,684.20

Finding the Fourth Proportional to 105,429.83, 145,495.26 and 57,684.20

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Solution

The fourth proportional to 105,429.83, 145,495.26 and 57,684.20 is: 79,605.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,429.83 : 145,495.26 = 57,684.20 : x
  2. Step 2: Convert to fraction form
    105,429.83/145,495.26 = 57,684.20/x
  3. Step 3: Cross multiply
    105,429.83x = 145,495.26 × 57,684.20
  4. Step 4: Simplify right side
    105,429.83x = 8,392,777,930.06
  5. Step 5: Solve for x
    x = 8,392,777,930.06/105,429.83
  6. Step 6: Final answer
    x = 79,605.35

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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.