Home / 52,145.80-78,218.86-12,702.92

Finding the Fourth Proportional to 52,145.80, 78,218.86 and 12,702.92

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Solution

The fourth proportional to 52,145.80, 78,218.86 and 12,702.92 is: 19,054.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,145.80 : 78,218.86 = 12,702.92 : x
  2. Step 2: Convert to fraction form
    52,145.80/78,218.86 = 12,702.92/x
  3. Step 3: Cross multiply
    52,145.80x = 78,218.86 × 12,702.92
  4. Step 4: Simplify right side
    52,145.80x = 993,607,921.07
  5. Step 5: Solve for x
    x = 993,607,921.07/52,145.80
  6. Step 6: Final answer
    x = 19,054.42

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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.