Home / 77,987.98-116,981.97-18,823.60

Finding the Fourth Proportional to 77,987.98, 116,981.97 and 18,823.60

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Solution

The fourth proportional to 77,987.98, 116,981.97 and 18,823.60 is: 28,235.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,987.98 : 116,981.97 = 18,823.60 : x
  2. Step 2: Convert to fraction form
    77,987.98/116,981.97 = 18,823.60/x
  3. Step 3: Cross multiply
    77,987.98x = 116,981.97 × 18,823.60
  4. Step 4: Simplify right side
    77,987.98x = 2,202,021,810.49
  5. Step 5: Solve for x
    x = 2,202,021,810.49/77,987.98
  6. Step 6: Final answer
    x = 28,235.40

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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.