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Finding the Fourth Proportional to 71,326.47, 98,430.53 and 39,495.39

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Solution

The fourth proportional to 71,326.47, 98,430.53 and 39,495.39 is: 54,503.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,326.47 : 98,430.53 = 39,495.39 : x
  2. Step 2: Convert to fraction form
    71,326.47/98,430.53 = 39,495.39/x
  3. Step 3: Cross multiply
    71,326.47x = 98,430.53 × 39,495.39
  4. Step 4: Simplify right side
    71,326.47x = 3,887,552,170.26
  5. Step 5: Solve for x
    x = 3,887,552,170.26/71,326.47
  6. Step 6: Final answer
    x = 54,503.64

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1.5x scale

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.