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Finding the Fourth Proportional to 86,859.81, 130,308.84 and 49,437.50

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Solution

The fourth proportional to 86,859.81, 130,308.84 and 49,437.50 is: 74,167.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,859.81 : 130,308.84 = 49,437.50 : x
  2. Step 2: Convert to fraction form
    86,859.81/130,308.84 = 49,437.50/x
  3. Step 3: Cross multiply
    86,859.81x = 130,308.84 × 49,437.50
  4. Step 4: Simplify right side
    86,859.81x = 6,442,142,625.96
  5. Step 5: Solve for x
    x = 6,442,142,625.96/86,859.81
  6. Step 6: Final answer
    x = 74,167.13

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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.