Home / 86,639.40-129,762.27-67,802.04

Finding the Fourth Proportional to 86,639.40, 129,762.27 and 67,802.04

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Solution

The fourth proportional to 86,639.40, 129,762.27 and 67,802.04 is: 101,549.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,639.40 : 129,762.27 = 67,802.04 : x
  2. Step 2: Convert to fraction form
    86,639.40/129,762.27 = 67,802.04/x
  3. Step 3: Cross multiply
    86,639.40x = 129,762.27 × 67,802.04
  4. Step 4: Simplify right side
    86,639.40x = 8,798,146,621.03
  5. Step 5: Solve for x
    x = 8,798,146,621.03/86,639.40
  6. Step 6: Final answer
    x = 101,549.03

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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.