Home / 86,483.09-129,782.35-30,323.16

Finding the Fourth Proportional to 86,483.09, 129,782.35 and 30,323.16

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Solution

The fourth proportional to 86,483.09, 129,782.35 and 30,323.16 is: 45,504.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,483.09 : 129,782.35 = 30,323.16 : x
  2. Step 2: Convert to fraction form
    86,483.09/129,782.35 = 30,323.16/x
  3. Step 3: Cross multiply
    86,483.09x = 129,782.35 × 30,323.16
  4. Step 4: Simplify right side
    86,483.09x = 3,935,411,002.13
  5. Step 5: Solve for x
    x = 3,935,411,002.13/86,483.09
  6. Step 6: Final answer
    x = 45,504.98

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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.