Home / 74,921.49-103,393.67-40,931.41

Finding the Fourth Proportional to 74,921.49, 103,393.67 and 40,931.41

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Solution

The fourth proportional to 74,921.49, 103,393.67 and 40,931.41 is: 56,486.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,921.49 : 103,393.67 = 40,931.41 : x
  2. Step 2: Convert to fraction form
    74,921.49/103,393.67 = 40,931.41/x
  3. Step 3: Cross multiply
    74,921.49x = 103,393.67 × 40,931.41
  4. Step 4: Simplify right side
    74,921.49x = 4,232,049,124.11
  5. Step 5: Solve for x
    x = 4,232,049,124.11/74,921.49
  6. Step 6: Final answer
    x = 56,486.45

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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.