Home / 75,150.40-103,704.80-43,320.64

Finding the Fourth Proportional to 75,150.40, 103,704.80 and 43,320.64

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Solution

The fourth proportional to 75,150.40, 103,704.80 and 43,320.64 is: 59,780.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,150.40 : 103,704.80 = 43,320.64 : x
  2. Step 2: Convert to fraction form
    75,150.40/103,704.80 = 43,320.64/x
  3. Step 3: Cross multiply
    75,150.40x = 103,704.80 × 43,320.64
  4. Step 4: Simplify right side
    75,150.40x = 4,492,558,307.07
  5. Step 5: Solve for x
    x = 4,492,558,307.07/75,150.40
  6. Step 6: Final answer
    x = 59,780.90

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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.