Home / 74,158.72-102,312.96-42,304.64

Finding the Fourth Proportional to 74,158.72, 102,312.96 and 42,304.64

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Solution

The fourth proportional to 74,158.72, 102,312.96 and 42,304.64 is: 58,365.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,158.72 : 102,312.96 = 42,304.64 : x
  2. Step 2: Convert to fraction form
    74,158.72/102,312.96 = 42,304.64/x
  3. Step 3: Cross multiply
    74,158.72x = 102,312.96 × 42,304.64
  4. Step 4: Simplify right side
    74,158.72x = 4,328,312,940.13
  5. Step 5: Solve for x
    x = 4,328,312,940.13/74,158.72
  6. Step 6: Final answer
    x = 58,365.53

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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.