Home / 74,872.89-103,323.81-40,881.28

Finding the Fourth Proportional to 74,872.89, 103,323.81 and 40,881.28

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Solution

The fourth proportional to 74,872.89, 103,323.81 and 40,881.28 is: 56,415.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,872.89 : 103,323.81 = 40,881.28 : x
  2. Step 2: Convert to fraction form
    74,872.89/103,323.81 = 40,881.28/x
  3. Step 3: Cross multiply
    74,872.89x = 103,323.81 × 40,881.28
  4. Step 4: Simplify right side
    74,872.89x = 4,224,009,607.28
  5. Step 5: Solve for x
    x = 4,224,009,607.28/74,872.89
  6. Step 6: Final answer
    x = 56,415.74

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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.