Home / 75,479.13-103,981.16-52,775.64

Finding the Fourth Proportional to 75,479.13, 103,981.16 and 52,775.64

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Solution

The fourth proportional to 75,479.13, 103,981.16 and 52,775.64 is: 72,704.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,479.13 : 103,981.16 = 52,775.64 : x
  2. Step 2: Convert to fraction form
    75,479.13/103,981.16 = 52,775.64/x
  3. Step 3: Cross multiply
    75,479.13x = 103,981.16 × 52,775.64
  4. Step 4: Simplify right side
    75,479.13x = 5,487,672,266.94
  5. Step 5: Solve for x
    x = 5,487,672,266.94/75,479.13
  6. Step 6: Final answer
    x = 72,704.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.