Home / 74,702.45-103,086.78-40,710.25

Finding the Fourth Proportional to 74,702.45, 103,086.78 and 40,710.25

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Solution

The fourth proportional to 74,702.45, 103,086.78 and 40,710.25 is: 56,178.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,702.45 : 103,086.78 = 40,710.25 : x
  2. Step 2: Convert to fraction form
    74,702.45/103,086.78 = 40,710.25/x
  3. Step 3: Cross multiply
    74,702.45x = 103,086.78 × 40,710.25
  4. Step 4: Simplify right side
    74,702.45x = 4,196,688,561.69
  5. Step 5: Solve for x
    x = 4,196,688,561.69/74,702.45
  6. Step 6: Final answer
    x = 56,178.73

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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.