Home / 76,271.91-105,138.57-53,547.15

Finding the Fourth Proportional to 76,271.91, 105,138.57 and 53,547.15

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Solution

The fourth proportional to 76,271.91, 105,138.57 and 53,547.15 is: 73,813.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,271.91 : 105,138.57 = 53,547.15 : x
  2. Step 2: Convert to fraction form
    76,271.91/105,138.57 = 53,547.15/x
  3. Step 3: Cross multiply
    76,271.91x = 105,138.57 × 53,547.15
  4. Step 4: Simplify right side
    76,271.91x = 5,629,870,778.58
  5. Step 5: Solve for x
    x = 5,629,870,778.58/76,271.91
  6. Step 6: Final answer
    x = 73,813.16

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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.