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Finding the Fourth Proportional to 35,442.80, 48,907.80 and 20,332.40

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Solution

The fourth proportional to 35,442.80, 48,907.80 and 20,332.40 is: 28,056.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,442.80 : 48,907.80 = 20,332.40 : x
  2. Step 2: Convert to fraction form
    35,442.80/48,907.80 = 20,332.40/x
  3. Step 3: Cross multiply
    35,442.80x = 48,907.80 × 20,332.40
  4. Step 4: Simplify right side
    35,442.80x = 994,412,952.72
  5. Step 5: Solve for x
    x = 994,412,952.72/35,442.80
  6. Step 6: Final answer
    x = 28,056.84

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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.