Home / 85,515.20-118,053.06-53,701.64

Finding the Fourth Proportional to 85,515.20, 118,053.06 and 53,701.64

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Solution

The fourth proportional to 85,515.20, 118,053.06 and 53,701.64 is: 74,134.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,515.20 : 118,053.06 = 53,701.64 : x
  2. Step 2: Convert to fraction form
    85,515.20/118,053.06 = 53,701.64/x
  3. Step 3: Cross multiply
    85,515.20x = 118,053.06 × 53,701.64
  4. Step 4: Simplify right side
    85,515.20x = 6,339,642,882.14
  5. Step 5: Solve for x
    x = 6,339,642,882.14/85,515.20
  6. Step 6: Final answer
    x = 74,134.69

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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.