Home / 88,031.82-121,530.98-68,870.87

Finding the Fourth Proportional to 88,031.82, 121,530.98 and 68,870.87

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Solution

The fourth proportional to 88,031.82, 121,530.98 and 68,870.87 is: 95,078.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,031.82 : 121,530.98 = 68,870.87 : x
  2. Step 2: Convert to fraction form
    88,031.82/121,530.98 = 68,870.87/x
  3. Step 3: Cross multiply
    88,031.82x = 121,530.98 × 68,870.87
  4. Step 4: Simplify right side
    88,031.82x = 8,369,943,889.07
  5. Step 5: Solve for x
    x = 8,369,943,889.07/88,031.82
  6. Step 6: Final answer
    x = 95,078.62

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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.