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Finding the Fourth Proportional to 60,502.76, 90,754.14 and 18,953

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Solution

The fourth proportional to 60,502.76, 90,754.14 and 18,953 is: 28,429.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,502.76 : 90,754.14 = 18,953 : x
  2. Step 2: Convert to fraction form
    60,502.76/90,754.14 = 18,953/x
  3. Step 3: Cross multiply
    60,502.76x = 90,754.14 × 18,953
  4. Step 4: Simplify right side
    60,502.76x = 1,720,063,215.42
  5. Step 5: Solve for x
    x = 1,720,063,215.42/60,502.76
  6. Step 6: Final answer
    x = 28,429.50

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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.