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Finding the Fourth Proportional to 86,585.67, 129,878.52 and 63,043.05

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Solution

The fourth proportional to 86,585.67, 129,878.52 and 63,043.05 is: 94,564.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,585.67 : 129,878.52 = 63,043.05 : x
  2. Step 2: Convert to fraction form
    86,585.67/129,878.52 = 63,043.05/x
  3. Step 3: Cross multiply
    86,585.67x = 129,878.52 × 63,043.05
  4. Step 4: Simplify right side
    86,585.67x = 8,187,938,030.29
  5. Step 5: Solve for x
    x = 8,187,938,030.29/86,585.67
  6. Step 6: Final answer
    x = 94,564.59

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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.