Home / 76,125.42-105,153.48-58,438.98

Finding the Fourth Proportional to 76,125.42, 105,153.48 and 58,438.98

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Solution

The fourth proportional to 76,125.42, 105,153.48 and 58,438.98 is: 80,722.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,125.42 : 105,153.48 = 58,438.98 : x
  2. Step 2: Convert to fraction form
    76,125.42/105,153.48 = 58,438.98/x
  3. Step 3: Cross multiply
    76,125.42x = 105,153.48 × 58,438.98
  4. Step 4: Simplify right side
    76,125.42x = 6,145,062,114.65
  5. Step 5: Solve for x
    x = 6,145,062,114.65/76,125.42
  6. Step 6: Final answer
    x = 80,722.87

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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.