Home / 74,986.78-112,457.44-39,428.93

Finding the Fourth Proportional to 74,986.78, 112,457.44 and 39,428.93

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Solution

The fourth proportional to 74,986.78, 112,457.44 and 39,428.93 is: 59,131.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,986.78 : 112,457.44 = 39,428.93 : x
  2. Step 2: Convert to fraction form
    74,986.78/112,457.44 = 39,428.93/x
  3. Step 3: Cross multiply
    74,986.78x = 112,457.44 × 39,428.93
  4. Step 4: Simplify right side
    74,986.78x = 4,434,076,810.88
  5. Step 5: Solve for x
    x = 4,434,076,810.88/74,986.78
  6. Step 6: Final answer
    x = 59,131.45

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.