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Finding the Fourth Proportional to 60,398.40, 90,599.48 and 28,811.88

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Solution

The fourth proportional to 60,398.40, 90,599.48 and 28,811.88 is: 43,218.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,398.40 : 90,599.48 = 28,811.88 : x
  2. Step 2: Convert to fraction form
    60,398.40/90,599.48 = 28,811.88/x
  3. Step 3: Cross multiply
    60,398.40x = 90,599.48 × 28,811.88
  4. Step 4: Simplify right side
    60,398.40x = 2,610,341,345.82
  5. Step 5: Solve for x
    x = 2,610,341,345.82/60,398.40
  6. Step 6: Final answer
    x = 43,218.72

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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.