Home / 86,581.85-129,880.17-30,417.08

Finding the Fourth Proportional to 86,581.85, 129,880.17 and 30,417.08

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Solution

The fourth proportional to 86,581.85, 129,880.17 and 30,417.08 is: 45,628.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,581.85 : 129,880.17 = 30,417.08 : x
  2. Step 2: Convert to fraction form
    86,581.85/129,880.17 = 30,417.08/x
  3. Step 3: Cross multiply
    86,581.85x = 129,880.17 × 30,417.08
  4. Step 4: Simplify right side
    86,581.85x = 3,950,574,871.90
  5. Step 5: Solve for x
    x = 3,950,574,871.90/86,581.85
  6. Step 6: Final answer
    x = 45,628.21

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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.