Home / 74,280.16-102,505.75-40,288.02

Finding the Fourth Proportional to 74,280.16, 102,505.75 and 40,288.02

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Solution

The fourth proportional to 74,280.16, 102,505.75 and 40,288.02 is: 55,597.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,280.16 : 102,505.75 = 40,288.02 : x
  2. Step 2: Convert to fraction form
    74,280.16/102,505.75 = 40,288.02/x
  3. Step 3: Cross multiply
    74,280.16x = 102,505.75 × 40,288.02
  4. Step 4: Simplify right side
    74,280.16x = 4,129,753,706.12
  5. Step 5: Solve for x
    x = 4,129,753,706.12/74,280.16
  6. Step 6: Final answer
    x = 55,597.00

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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.