Home / 78,535.51-117,758.61-53,605.73

Finding the Fourth Proportional to 78,535.51, 117,758.61 and 53,605.73

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Solution

The fourth proportional to 78,535.51, 117,758.61 and 53,605.73 is: 80,378.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,535.51 : 117,758.61 = 53,605.73 : x
  2. Step 2: Convert to fraction form
    78,535.51/117,758.61 = 53,605.73/x
  3. Step 3: Cross multiply
    78,535.51x = 117,758.61 × 53,605.73
  4. Step 4: Simplify right side
    78,535.51x = 6,312,536,547.23
  5. Step 5: Solve for x
    x = 6,312,536,547.23/78,535.51
  6. Step 6: Final answer
    x = 80,378.12

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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.