Home / 74,554.89-102,888.21-42,729.90

Finding the Fourth Proportional to 74,554.89, 102,888.21 and 42,729.90

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Solution

The fourth proportional to 74,554.89, 102,888.21 and 42,729.90 is: 58,968.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,554.89 : 102,888.21 = 42,729.90 : x
  2. Step 2: Convert to fraction form
    74,554.89/102,888.21 = 42,729.90/x
  3. Step 3: Cross multiply
    74,554.89x = 102,888.21 × 42,729.90
  4. Step 4: Simplify right side
    74,554.89x = 4,396,402,924.48
  5. Step 5: Solve for x
    x = 4,396,402,924.48/74,554.89
  6. Step 6: Final answer
    x = 58,968.67

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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.