Home / 76,455.09-105,504.44-42,465.78

Finding the Fourth Proportional to 76,455.09, 105,504.44 and 42,465.78

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Solution

The fourth proportional to 76,455.09, 105,504.44 and 42,465.78 is: 58,600.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,455.09 : 105,504.44 = 42,465.78 : x
  2. Step 2: Convert to fraction form
    76,455.09/105,504.44 = 42,465.78/x
  3. Step 3: Cross multiply
    76,455.09x = 105,504.44 × 42,465.78
  4. Step 4: Simplify right side
    76,455.09x = 4,480,328,125.73
  5. Step 5: Solve for x
    x = 4,480,328,125.73/76,455.09
  6. Step 6: Final answer
    x = 58,600.78

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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.