Home / 52,001.80-78,002.70-20,859.40

Finding the Fourth Proportional to 52,001.80, 78,002.70 and 20,859.40

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Solution

The fourth proportional to 52,001.80, 78,002.70 and 20,859.40 is: 31,289.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,001.80 : 78,002.70 = 20,859.40 : x
  2. Step 2: Convert to fraction form
    52,001.80/78,002.70 = 20,859.40/x
  3. Step 3: Cross multiply
    52,001.80x = 78,002.70 × 20,859.40
  4. Step 4: Simplify right side
    52,001.80x = 1,627,089,520.38
  5. Step 5: Solve for x
    x = 1,627,089,520.38/52,001.80
  6. Step 6: Final answer
    x = 31,289.10

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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.