Home / 86,433.15-129,698.93-69,013.70

Finding the Fourth Proportional to 86,433.15, 129,698.93 and 69,013.70

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Solution

The fourth proportional to 86,433.15, 129,698.93 and 69,013.70 is: 103,559.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,433.15 : 129,698.93 = 69,013.70 : x
  2. Step 2: Convert to fraction form
    86,433.15/129,698.93 = 69,013.70/x
  3. Step 3: Cross multiply
    86,433.15x = 129,698.93 × 69,013.70
  4. Step 4: Simplify right side
    86,433.15x = 8,951,003,045.34
  5. Step 5: Solve for x
    x = 8,951,003,045.34/86,433.15
  6. Step 6: Final answer
    x = 103,559.84

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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.