Home / 74,160.43-102,359.70-42,347.78

Finding the Fourth Proportional to 74,160.43, 102,359.70 and 42,347.78

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Solution

The fourth proportional to 74,160.43, 102,359.70 and 42,347.78 is: 58,450.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,160.43 : 102,359.70 = 42,347.78 : x
  2. Step 2: Convert to fraction form
    74,160.43/102,359.70 = 42,347.78/x
  3. Step 3: Cross multiply
    74,160.43x = 102,359.70 × 42,347.78
  4. Step 4: Simplify right side
    74,160.43x = 4,334,705,928.52
  5. Step 5: Solve for x
    x = 4,334,705,928.52/74,160.43
  6. Step 6: Final answer
    x = 58,450.39

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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.