Home / 55,870.83-77,103.26-30,378.90

Finding the Fourth Proportional to 55,870.83, 77,103.26 and 30,378.90

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Solution

The fourth proportional to 55,870.83, 77,103.26 and 30,378.90 is: 41,923.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,870.83 : 77,103.26 = 30,378.90 : x
  2. Step 2: Convert to fraction form
    55,870.83/77,103.26 = 30,378.90/x
  3. Step 3: Cross multiply
    55,870.83x = 77,103.26 × 30,378.90
  4. Step 4: Simplify right side
    55,870.83x = 2,342,312,073.32
  5. Step 5: Solve for x
    x = 2,342,312,073.32/55,870.83
  6. Step 6: Final answer
    x = 41,923.70

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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.