Home / 45,056.76-67,590-18,746.88

Finding the Fourth Proportional to 45,056.76, 67,590 and 18,746.88

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Solution

The fourth proportional to 45,056.76, 67,590 and 18,746.88 is: 28,122.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,056.76 : 67,590 = 18,746.88 : x
  2. Step 2: Convert to fraction form
    45,056.76/67,590 = 18,746.88/x
  3. Step 3: Cross multiply
    45,056.76x = 67,590 × 18,746.88
  4. Step 4: Simplify right side
    45,056.76x = 1,267,101,619.20
  5. Step 5: Solve for x
    x = 1,267,101,619.20/45,056.76
  6. Step 6: Final answer
    x = 28,122.34

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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.