Home / 51,985.32-77,977.98-12,542.40

Finding the Fourth Proportional to 51,985.32, 77,977.98 and 12,542.40

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Solution

The fourth proportional to 51,985.32, 77,977.98 and 12,542.40 is: 18,813.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,985.32 : 77,977.98 = 12,542.40 : x
  2. Step 2: Convert to fraction form
    51,985.32/77,977.98 = 12,542.40/x
  3. Step 3: Cross multiply
    51,985.32x = 77,977.98 × 12,542.40
  4. Step 4: Simplify right side
    51,985.32x = 978,031,016.35
  5. Step 5: Solve for x
    x = 978,031,016.35/51,985.32
  6. Step 6: Final answer
    x = 18,813.60

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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.