Home / 70,436.32-105,651.74-28,303.76

Finding the Fourth Proportional to 70,436.32, 105,651.74 and 28,303.76

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Solution

The fourth proportional to 70,436.32, 105,651.74 and 28,303.76 is: 42,454.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,436.32 : 105,651.74 = 28,303.76 : x
  2. Step 2: Convert to fraction form
    70,436.32/105,651.74 = 28,303.76/x
  3. Step 3: Cross multiply
    70,436.32x = 105,651.74 × 28,303.76
  4. Step 4: Simplify right side
    70,436.32x = 2,990,341,827.43
  5. Step 5: Solve for x
    x = 2,990,341,827.43/70,436.32
  6. Step 6: Final answer
    x = 42,454.55

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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.