Home / 52,222.80-78,334.20-12,779.40

Finding the Fourth Proportional to 52,222.80, 78,334.20 and 12,779.40

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Solution

The fourth proportional to 52,222.80, 78,334.20 and 12,779.40 is: 19,169.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,222.80 : 78,334.20 = 12,779.40 : x
  2. Step 2: Convert to fraction form
    52,222.80/78,334.20 = 12,779.40/x
  3. Step 3: Cross multiply
    52,222.80x = 78,334.20 × 12,779.40
  4. Step 4: Simplify right side
    52,222.80x = 1,001,064,075.48
  5. Step 5: Solve for x
    x = 1,001,064,075.48/52,222.80
  6. Step 6: Final answer
    x = 19,169.10

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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.