Home / 39,890.40-59,835.60-30,559.20

Finding the Fourth Proportional to 39,890.40, 59,835.60 and 30,559.20

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Solution

The fourth proportional to 39,890.40, 59,835.60 and 30,559.20 is: 45,838.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,890.40 : 59,835.60 = 30,559.20 : x
  2. Step 2: Convert to fraction form
    39,890.40/59,835.60 = 30,559.20/x
  3. Step 3: Cross multiply
    39,890.40x = 59,835.60 × 30,559.20
  4. Step 4: Simplify right side
    39,890.40x = 1,828,528,067.52
  5. Step 5: Solve for x
    x = 1,828,528,067.52/39,890.40
  6. Step 6: Final answer
    x = 45,838.80

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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.