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Finding the Fourth Proportional to 70,050.57, 105,038.72 and 30,561.55

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Solution

The fourth proportional to 70,050.57, 105,038.72 and 30,561.55 is: 45,826.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,050.57 : 105,038.72 = 30,561.55 : x
  2. Step 2: Convert to fraction form
    70,050.57/105,038.72 = 30,561.55/x
  3. Step 3: Cross multiply
    70,050.57x = 105,038.72 × 30,561.55
  4. Step 4: Simplify right side
    70,050.57x = 3,210,145,415.21
  5. Step 5: Solve for x
    x = 3,210,145,415.21/70,050.57
  6. Step 6: Final answer
    x = 45,826.12

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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.