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Finding the Fourth Proportional to 84,810.60, 127,238.04 and 45,335.52

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Solution

The fourth proportional to 84,810.60, 127,238.04 and 45,335.52 is: 68,015.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,810.60 : 127,238.04 = 45,335.52 : x
  2. Step 2: Convert to fraction form
    84,810.60/127,238.04 = 45,335.52/x
  3. Step 3: Cross multiply
    84,810.60x = 127,238.04 × 45,335.52
  4. Step 4: Simplify right side
    84,810.60x = 5,768,402,707.18
  5. Step 5: Solve for x
    x = 5,768,402,707.18/84,810.60
  6. Step 6: Final answer
    x = 68,015.11

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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.