Home / 76,464.09-105,483.81-53,815.65

Finding the Fourth Proportional to 76,464.09, 105,483.81 and 53,815.65

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Solution

The fourth proportional to 76,464.09, 105,483.81 and 53,815.65 is: 74,239.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,464.09 : 105,483.81 = 53,815.65 : x
  2. Step 2: Convert to fraction form
    76,464.09/105,483.81 = 53,815.65/x
  3. Step 3: Cross multiply
    76,464.09x = 105,483.81 × 53,815.65
  4. Step 4: Simplify right side
    76,464.09x = 5,676,679,799.63
  5. Step 5: Solve for x
    x = 5,676,679,799.63/76,464.09
  6. Step 6: Final answer
    x = 74,239.81

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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.