Home / 55,703.25-76,870.13-30,209.67

Finding the Fourth Proportional to 55,703.25, 76,870.13 and 30,209.67

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Solution

The fourth proportional to 55,703.25, 76,870.13 and 30,209.67 is: 41,689.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,703.25 : 76,870.13 = 30,209.67 : x
  2. Step 2: Convert to fraction form
    55,703.25/76,870.13 = 30,209.67/x
  3. Step 3: Cross multiply
    55,703.25x = 76,870.13 × 30,209.67
  4. Step 4: Simplify right side
    55,703.25x = 2,322,221,109.11
  5. Step 5: Solve for x
    x = 2,322,221,109.11/55,703.25
  6. Step 6: Final answer
    x = 41,689.15

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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.