Home / 74,279.14-102,503.80-42,013.19

Finding the Fourth Proportional to 74,279.14, 102,503.80 and 42,013.19

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Solution

The fourth proportional to 74,279.14, 102,503.80 and 42,013.19 is: 57,977.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,279.14 : 102,503.80 = 42,013.19 : x
  2. Step 2: Convert to fraction form
    74,279.14/102,503.80 = 42,013.19/x
  3. Step 3: Cross multiply
    74,279.14x = 102,503.80 × 42,013.19
  4. Step 4: Simplify right side
    74,279.14x = 4,306,511,625.12
  5. Step 5: Solve for x
    x = 4,306,511,625.12/74,279.14
  6. Step 6: Final answer
    x = 57,977.40

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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.