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Finding the Fourth Proportional to 40,531, 60,746.58 and 28,780.60

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Solution

The fourth proportional to 40,531, 60,746.58 and 28,780.60 is: 43,135.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,531 : 60,746.58 = 28,780.60 : x
  2. Step 2: Convert to fraction form
    40,531/60,746.58 = 28,780.60/x
  3. Step 3: Cross multiply
    40,531x = 60,746.58 × 28,780.60
  4. Step 4: Simplify right side
    40,531x = 1,748,323,020.35
  5. Step 5: Solve for x
    x = 1,748,323,020.35/40,531
  6. Step 6: Final answer
    x = 43,135.45

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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.