Home / 105,319.26-145,339.84-57,572.72

Finding the Fourth Proportional to 105,319.26, 145,339.84 and 57,572.72

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Solution

The fourth proportional to 105,319.26, 145,339.84 and 57,572.72 is: 79,449.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,319.26 : 145,339.84 = 57,572.72 : x
  2. Step 2: Convert to fraction form
    105,319.26/145,339.84 = 57,572.72/x
  3. Step 3: Cross multiply
    105,319.26x = 145,339.84 × 57,572.72
  4. Step 4: Simplify right side
    105,319.26x = 8,367,609,913.16
  5. Step 5: Solve for x
    x = 8,367,609,913.16/105,319.26
  6. Step 6: Final answer
    x = 79,449.95

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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.