Home / 52,028.80-78,043.20-20,886.40

Finding the Fourth Proportional to 52,028.80, 78,043.20 and 20,886.40

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Solution

The fourth proportional to 52,028.80, 78,043.20 and 20,886.40 is: 31,329.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,028.80 : 78,043.20 = 20,886.40 : x
  2. Step 2: Convert to fraction form
    52,028.80/78,043.20 = 20,886.40/x
  3. Step 3: Cross multiply
    52,028.80x = 78,043.20 × 20,886.40
  4. Step 4: Simplify right side
    52,028.80x = 1,630,041,492.48
  5. Step 5: Solve for x
    x = 1,630,041,492.48/52,028.80
  6. Step 6: Final answer
    x = 31,329.60

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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.