Home / 74,189.21-102,378.89-42,351.89

Finding the Fourth Proportional to 74,189.21, 102,378.89 and 42,351.89

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Solution

The fourth proportional to 74,189.21, 102,378.89 and 42,351.89 is: 58,444.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,189.21 : 102,378.89 = 42,351.89 : x
  2. Step 2: Convert to fraction form
    74,189.21/102,378.89 = 42,351.89/x
  3. Step 3: Cross multiply
    74,189.21x = 102,378.89 × 42,351.89
  4. Step 4: Simplify right side
    74,189.21x = 4,335,939,275.84
  5. Step 5: Solve for x
    x = 4,335,939,275.84/74,189.21
  6. Step 6: Final answer
    x = 58,444.34

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1.5x scale

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.