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Finding the Fourth Proportional to 65,987.70, 98,981.55 and 16,067.40

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Solution

The fourth proportional to 65,987.70, 98,981.55 and 16,067.40 is: 24,101.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,987.70 : 98,981.55 = 16,067.40 : x
  2. Step 2: Convert to fraction form
    65,987.70/98,981.55 = 16,067.40/x
  3. Step 3: Cross multiply
    65,987.70x = 98,981.55 × 16,067.40
  4. Step 4: Simplify right side
    65,987.70x = 1,590,376,156.47
  5. Step 5: Solve for x
    x = 1,590,376,156.47/65,987.70
  6. Step 6: Final answer
    x = 24,101.10

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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.