Home / 76,131.47-105,065.03-43,870.91

Finding the Fourth Proportional to 76,131.47, 105,065.03 and 43,870.91

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Solution

The fourth proportional to 76,131.47, 105,065.03 and 43,870.91 is: 60,543.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,131.47 : 105,065.03 = 43,870.91 : x
  2. Step 2: Convert to fraction form
    76,131.47/105,065.03 = 43,870.91/x
  3. Step 3: Cross multiply
    76,131.47x = 105,065.03 × 43,870.91
  4. Step 4: Simplify right side
    76,131.47x = 4,609,297,730.60
  5. Step 5: Solve for x
    x = 4,609,297,730.60/76,131.47
  6. Step 6: Final answer
    x = 60,543.93

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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.