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Finding the Fourth Proportional to 53,610, 73,981.86 and 31,258.32

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Solution

The fourth proportional to 53,610, 73,981.86 and 31,258.32 is: 43,136.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,610 : 73,981.86 = 31,258.32 : x
  2. Step 2: Convert to fraction form
    53,610/73,981.86 = 31,258.32/x
  3. Step 3: Cross multiply
    53,610x = 73,981.86 × 31,258.32
  4. Step 4: Simplify right side
    53,610x = 2,312,548,654.08
  5. Step 5: Solve for x
    x = 2,312,548,654.08/53,610
  6. Step 6: Final answer
    x = 43,136.52

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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.