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Finding the Fourth Proportional to 86,358.39, 129,482.25 and 59,629.50

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Solution

The fourth proportional to 86,358.39, 129,482.25 and 59,629.50 is: 89,406.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,358.39 : 129,482.25 = 59,629.50 : x
  2. Step 2: Convert to fraction form
    86,358.39/129,482.25 = 59,629.50/x
  3. Step 3: Cross multiply
    86,358.39x = 129,482.25 × 59,629.50
  4. Step 4: Simplify right side
    86,358.39x = 7,720,961,602.76
  5. Step 5: Solve for x
    x = 7,720,961,602.76/86,358.39
  6. Step 6: Final answer
    x = 89,406.04

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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.