Home / 83,651.12-115,438.64-45,410.65

Finding the Fourth Proportional to 83,651.12, 115,438.64 and 45,410.65

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Solution

The fourth proportional to 83,651.12, 115,438.64 and 45,410.65 is: 62,666.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,651.12 : 115,438.64 = 45,410.65 : x
  2. Step 2: Convert to fraction form
    83,651.12/115,438.64 = 45,410.65/x
  3. Step 3: Cross multiply
    83,651.12x = 115,438.64 × 45,410.65
  4. Step 4: Simplify right side
    83,651.12x = 5,242,143,677.52
  5. Step 5: Solve for x
    x = 5,242,143,677.52/83,651.12
  6. Step 6: Final answer
    x = 62,666.75

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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.