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Finding the Fourth Proportional to 62,430, 93,645 and 20,878.08

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Solution

The fourth proportional to 62,430, 93,645 and 20,878.08 is: 31,317.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,430 : 93,645 = 20,878.08 : x
  2. Step 2: Convert to fraction form
    62,430/93,645 = 20,878.08/x
  3. Step 3: Cross multiply
    62,430x = 93,645 × 20,878.08
  4. Step 4: Simplify right side
    62,430x = 1,955,127,801.60
  5. Step 5: Solve for x
    x = 1,955,127,801.60/62,430
  6. Step 6: Final answer
    x = 31,317.12

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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.