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Finding the Fourth Proportional to 60,486.30, 90,730.08 and 21,044.70

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Solution

The fourth proportional to 60,486.30, 90,730.08 and 21,044.70 is: 31,567.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,486.30 : 90,730.08 = 21,044.70 : x
  2. Step 2: Convert to fraction form
    60,486.30/90,730.08 = 21,044.70/x
  3. Step 3: Cross multiply
    60,486.30x = 90,730.08 × 21,044.70
  4. Step 4: Simplify right side
    60,486.30x = 1,909,387,314.58
  5. Step 5: Solve for x
    x = 1,909,387,314.58/60,486.30
  6. Step 6: Final answer
    x = 31,567.27

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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.