Home / 76,639.29-105,771.42-46,423.72

Finding the Fourth Proportional to 76,639.29, 105,771.42 and 46,423.72

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Solution

The fourth proportional to 76,639.29, 105,771.42 and 46,423.72 is: 64,070.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,639.29 : 105,771.42 = 46,423.72 : x
  2. Step 2: Convert to fraction form
    76,639.29/105,771.42 = 46,423.72/x
  3. Step 3: Cross multiply
    76,639.29x = 105,771.42 × 46,423.72
  4. Step 4: Simplify right side
    76,639.29x = 4,910,302,786.08
  5. Step 5: Solve for x
    x = 4,910,302,786.08/76,639.29
  6. Step 6: Final answer
    x = 64,070.31

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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.