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Finding the Fourth Proportional to 71,430.58, 98,570.01 and 39,164.50

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Solution

The fourth proportional to 71,430.58, 98,570.01 and 39,164.50 is: 54,044.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,430.58 : 98,570.01 = 39,164.50 : x
  2. Step 2: Convert to fraction form
    71,430.58/98,570.01 = 39,164.50/x
  3. Step 3: Cross multiply
    71,430.58x = 98,570.01 × 39,164.50
  4. Step 4: Simplify right side
    71,430.58x = 3,860,445,156.65
  5. Step 5: Solve for x
    x = 3,860,445,156.65/71,430.58
  6. Step 6: Final answer
    x = 54,044.71

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.