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Finding the Fourth Proportional to 86,854.36, 130,182.72 and 36,903.28

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Solution

The fourth proportional to 86,854.36, 130,182.72 and 36,903.28 is: 55,312.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,854.36 : 130,182.72 = 36,903.28 : x
  2. Step 2: Convert to fraction form
    86,854.36/130,182.72 = 36,903.28/x
  3. Step 3: Cross multiply
    86,854.36x = 130,182.72 × 36,903.28
  4. Step 4: Simplify right side
    86,854.36x = 4,804,169,367.32
  5. Step 5: Solve for x
    x = 4,804,169,367.32/86,854.36
  6. Step 6: Final answer
    x = 55,312.93

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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.