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Finding the Fourth Proportional to 86,034.68, 118,746.84 and 47,807.36

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Solution

The fourth proportional to 86,034.68, 118,746.84 and 47,807.36 is: 65,984.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,034.68 : 118,746.84 = 47,807.36 : x
  2. Step 2: Convert to fraction form
    86,034.68/118,746.84 = 47,807.36/x
  3. Step 3: Cross multiply
    86,034.68x = 118,746.84 × 47,807.36
  4. Step 4: Simplify right side
    86,034.68x = 5,676,972,335.01
  5. Step 5: Solve for x
    x = 5,676,972,335.01/86,034.68
  6. Step 6: Final answer
    x = 65,984.70

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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.