Home / 85,703.08-128,450.94-44,127.40

Finding the Fourth Proportional to 85,703.08, 128,450.94 and 44,127.40

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Solution

The fourth proportional to 85,703.08, 128,450.94 and 44,127.40 is: 66,137.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,703.08 : 128,450.94 = 44,127.40 : x
  2. Step 2: Convert to fraction form
    85,703.08/128,450.94 = 44,127.40/x
  3. Step 3: Cross multiply
    85,703.08x = 128,450.94 × 44,127.40
  4. Step 4: Simplify right side
    85,703.08x = 5,668,206,009.76
  5. Step 5: Solve for x
    x = 5,668,206,009.76/85,703.08
  6. Step 6: Final answer
    x = 66,137.72

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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.