Home / 31,518.80-47,278.20-30,904.40

Finding the Fourth Proportional to 31,518.80, 47,278.20 and 30,904.40

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Solution

The fourth proportional to 31,518.80, 47,278.20 and 30,904.40 is: 46,356.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,518.80 : 47,278.20 = 30,904.40 : x
  2. Step 2: Convert to fraction form
    31,518.80/47,278.20 = 30,904.40/x
  3. Step 3: Cross multiply
    31,518.80x = 47,278.20 × 30,904.40
  4. Step 4: Simplify right side
    31,518.80x = 1,461,104,404.08
  5. Step 5: Solve for x
    x = 1,461,104,404.08/31,518.80
  6. Step 6: Final answer
    x = 46,356.60

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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.