Home / 67,981.08-101,953.80-30,520.20

Finding the Fourth Proportional to 67,981.08, 101,953.80 and 30,520.20

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Solution

The fourth proportional to 67,981.08, 101,953.80 and 30,520.20 is: 45,772.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,981.08 : 101,953.80 = 30,520.20 : x
  2. Step 2: Convert to fraction form
    67,981.08/101,953.80 = 30,520.20/x
  3. Step 3: Cross multiply
    67,981.08x = 101,953.80 × 30,520.20
  4. Step 4: Simplify right side
    67,981.08x = 3,111,650,366.76
  5. Step 5: Solve for x
    x = 3,111,650,366.76/67,981.08
  6. Step 6: Final answer
    x = 45,772.30

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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.