Home / 86,988.42-120,041.96-51,180.71

Finding the Fourth Proportional to 86,988.42, 120,041.96 and 51,180.71

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Solution

The fourth proportional to 86,988.42, 120,041.96 and 51,180.71 is: 70,628.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,988.42 : 120,041.96 = 51,180.71 : x
  2. Step 2: Convert to fraction form
    86,988.42/120,041.96 = 51,180.71/x
  3. Step 3: Cross multiply
    86,988.42x = 120,041.96 × 51,180.71
  4. Step 4: Simplify right side
    86,988.42x = 6,143,831,886.48
  5. Step 5: Solve for x
    x = 6,143,831,886.48/86,988.42
  6. Step 6: Final answer
    x = 70,628.16

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.