Home / 86,985.77-130,499.42-30,830.79

Finding the Fourth Proportional to 86,985.77, 130,499.42 and 30,830.79

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Solution

The fourth proportional to 86,985.77, 130,499.42 and 30,830.79 is: 46,253.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,985.77 : 130,499.42 = 30,830.79 : x
  2. Step 2: Convert to fraction form
    86,985.77/130,499.42 = 30,830.79/x
  3. Step 3: Cross multiply
    86,985.77x = 130,499.42 × 30,830.79
  4. Step 4: Simplify right side
    86,985.77x = 4,023,400,058.99
  5. Step 5: Solve for x
    x = 4,023,400,058.99/86,985.77
  6. Step 6: Final answer
    x = 46,253.54

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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.