Home / 53,739.40-74,169.80-31,074.80

Finding the Fourth Proportional to 53,739.40, 74,169.80 and 31,074.80

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Solution

The fourth proportional to 53,739.40, 74,169.80 and 31,074.80 is: 42,888.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,739.40 : 74,169.80 = 31,074.80 : x
  2. Step 2: Convert to fraction form
    53,739.40/74,169.80 = 31,074.80/x
  3. Step 3: Cross multiply
    53,739.40x = 74,169.80 × 31,074.80
  4. Step 4: Simplify right side
    53,739.40x = 2,304,811,701.04
  5. Step 5: Solve for x
    x = 2,304,811,701.04/53,739.40
  6. Step 6: Final answer
    x = 42,888.68

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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.