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Finding the Fourth Proportional to 60,215.81, 90,275.51 and 28,610.01

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Solution

The fourth proportional to 60,215.81, 90,275.51 and 28,610.01 is: 42,892.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,215.81 : 90,275.51 = 28,610.01 : x
  2. Step 2: Convert to fraction form
    60,215.81/90,275.51 = 28,610.01/x
  3. Step 3: Cross multiply
    60,215.81x = 90,275.51 × 28,610.01
  4. Step 4: Simplify right side
    60,215.81x = 2,582,783,315.38
  5. Step 5: Solve for x
    x = 2,582,783,315.38/60,215.81
  6. Step 6: Final answer
    x = 42,892.12

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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.