Home / 52,479.20-78,718.80-28,859.60

Finding the Fourth Proportional to 52,479.20, 78,718.80 and 28,859.60

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Solution

The fourth proportional to 52,479.20, 78,718.80 and 28,859.60 is: 43,289.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,479.20 : 78,718.80 = 28,859.60 : x
  2. Step 2: Convert to fraction form
    52,479.20/78,718.80 = 28,859.60/x
  3. Step 3: Cross multiply
    52,479.20x = 78,718.80 × 28,859.60
  4. Step 4: Simplify right side
    52,479.20x = 2,271,793,080.48
  5. Step 5: Solve for x
    x = 2,271,793,080.48/52,479.20
  6. Step 6: Final answer
    x = 43,289.40

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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.