Home / 76,148.75-105,070.69-49,287.53

Finding the Fourth Proportional to 76,148.75, 105,070.69 and 49,287.53

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Solution

The fourth proportional to 76,148.75, 105,070.69 and 49,287.53 is: 68,007.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,148.75 : 105,070.69 = 49,287.53 : x
  2. Step 2: Convert to fraction form
    76,148.75/105,070.69 = 49,287.53/x
  3. Step 3: Cross multiply
    76,148.75x = 105,070.69 × 49,287.53
  4. Step 4: Simplify right side
    76,148.75x = 5,178,674,785.50
  5. Step 5: Solve for x
    x = 5,178,674,785.50/76,148.75
  6. Step 6: Final answer
    x = 68,007.35

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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.