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Finding the Fourth Proportional to 30,859.80, 46,386.90 and 30,276.60

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Solution

The fourth proportional to 30,859.80, 46,386.90 and 30,276.60 is: 45,510.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,859.80 : 46,386.90 = 30,276.60 : x
  2. Step 2: Convert to fraction form
    30,859.80/46,386.90 = 30,276.60/x
  3. Step 3: Cross multiply
    30,859.80x = 46,386.90 × 30,276.60
  4. Step 4: Simplify right side
    30,859.80x = 1,404,437,616.54
  5. Step 5: Solve for x
    x = 1,404,437,616.54/30,859.80
  6. Step 6: Final answer
    x = 45,510.26

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1.5x scale

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.