Home / 76,457.09-105,507.19-42,467.78

Finding the Fourth Proportional to 76,457.09, 105,507.19 and 42,467.78

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Solution

The fourth proportional to 76,457.09, 105,507.19 and 42,467.78 is: 58,603.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,457.09 : 105,507.19 = 42,467.78 : x
  2. Step 2: Convert to fraction form
    76,457.09/105,507.19 = 42,467.78/x
  3. Step 3: Cross multiply
    76,457.09x = 105,507.19 × 42,467.78
  4. Step 4: Simplify right side
    76,457.09x = 4,480,656,133.34
  5. Step 5: Solve for x
    x = 4,480,656,133.34/76,457.09
  6. Step 6: Final answer
    x = 58,603.54

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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.