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Finding the Fourth Proportional to 46,807.80, 70,211.70 and 20,563.80

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Solution

The fourth proportional to 46,807.80, 70,211.70 and 20,563.80 is: 30,845.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    46,807.80 : 70,211.70 = 20,563.80 : x
  2. Step 2: Convert to fraction form
    46,807.80/70,211.70 = 20,563.80/x
  3. Step 3: Cross multiply
    46,807.80x = 70,211.70 × 20,563.80
  4. Step 4: Simplify right side
    46,807.80x = 1,443,819,356.46
  5. Step 5: Solve for x
    x = 1,443,819,356.46/46,807.80
  6. Step 6: Final answer
    x = 30,845.70

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.