Home / 86,055.20-129,038.25-38,629.45

Finding the Fourth Proportional to 86,055.20, 129,038.25 and 38,629.45

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Solution

The fourth proportional to 86,055.20, 129,038.25 and 38,629.45 is: 57,924.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,055.20 : 129,038.25 = 38,629.45 : x
  2. Step 2: Convert to fraction form
    86,055.20/129,038.25 = 38,629.45/x
  3. Step 3: Cross multiply
    86,055.20x = 129,038.25 × 38,629.45
  4. Step 4: Simplify right side
    86,055.20x = 4,984,676,626.46
  5. Step 5: Solve for x
    x = 4,984,676,626.46/86,055.20
  6. Step 6: Final answer
    x = 57,924.18

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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.