Home / 76,148.63-105,070.52-49,287.41

Finding the Fourth Proportional to 76,148.63, 105,070.52 and 49,287.41

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Solution

The fourth proportional to 76,148.63, 105,070.52 and 49,287.41 is: 68,007.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,148.63 : 105,070.52 = 49,287.41 : x
  2. Step 2: Convert to fraction form
    76,148.63/105,070.52 = 49,287.41/x
  3. Step 3: Cross multiply
    76,148.63x = 105,070.52 × 49,287.41
  4. Step 4: Simplify right side
    76,148.63x = 5,178,653,798.15
  5. Step 5: Solve for x
    x = 5,178,653,798.15/76,148.63
  6. Step 6: Final answer
    x = 68,007.18

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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.