Home / 74,017.23-102,145.28-40,485.39

Finding the Fourth Proportional to 74,017.23, 102,145.28 and 40,485.39

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Solution

The fourth proportional to 74,017.23, 102,145.28 and 40,485.39 is: 55,870.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,017.23 : 102,145.28 = 40,485.39 : x
  2. Step 2: Convert to fraction form
    74,017.23/102,145.28 = 40,485.39/x
  3. Step 3: Cross multiply
    74,017.23x = 102,145.28 × 40,485.39
  4. Step 4: Simplify right side
    74,017.23x = 4,135,391,497.46
  5. Step 5: Solve for x
    x = 4,135,391,497.46/74,017.23
  6. Step 6: Final answer
    x = 55,870.66

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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.