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Finding the Fourth Proportional to 60,085.74, 90,134.72 and 20,637.72

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Solution

The fourth proportional to 60,085.74, 90,134.72 and 20,637.72 is: 30,958.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,085.74 : 90,134.72 = 20,637.72 : x
  2. Step 2: Convert to fraction form
    60,085.74/90,134.72 = 20,637.72/x
  3. Step 3: Cross multiply
    60,085.74x = 90,134.72 × 20,637.72
  4. Step 4: Simplify right side
    60,085.74x = 1,860,175,113.64
  5. Step 5: Solve for x
    x = 1,860,175,113.64/60,085.74
  6. Step 6: Final answer
    x = 30,958.68

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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.