Home / 76,400.55-105,427.73-42,407.37

Finding the Fourth Proportional to 76,400.55, 105,427.73 and 42,407.37

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Solution

The fourth proportional to 76,400.55, 105,427.73 and 42,407.37 is: 58,519.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,400.55 : 105,427.73 = 42,407.37 : x
  2. Step 2: Convert to fraction form
    76,400.55/105,427.73 = 42,407.37/x
  3. Step 3: Cross multiply
    76,400.55x = 105,427.73 × 42,407.37
  4. Step 4: Simplify right side
    76,400.55x = 4,470,912,860.39
  5. Step 5: Solve for x
    x = 4,470,912,860.39/76,400.55
  6. Step 6: Final answer
    x = 58,519.38

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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.