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Finding the Fourth Proportional to 86,656.52, 130,032.86 and 42,283.64

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Solution

The fourth proportional to 86,656.52, 130,032.86 and 42,283.64 is: 63,448.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,656.52 : 130,032.86 = 42,283.64 : x
  2. Step 2: Convert to fraction form
    86,656.52/130,032.86 = 42,283.64/x
  3. Step 3: Cross multiply
    86,656.52x = 130,032.86 × 42,283.64
  4. Step 4: Simplify right side
    86,656.52x = 5,498,262,754.07
  5. Step 5: Solve for x
    x = 5,498,262,754.07/86,656.52
  6. Step 6: Final answer
    x = 63,448.92

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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.