Home / 90,871.08-136,219.14-55,820.76

Finding the Fourth Proportional to 90,871.08, 136,219.14 and 55,820.76

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Solution

The fourth proportional to 90,871.08, 136,219.14 and 55,820.76 is: 83,677.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,871.08 : 136,219.14 = 55,820.76 : x
  2. Step 2: Convert to fraction form
    90,871.08/136,219.14 = 55,820.76/x
  3. Step 3: Cross multiply
    90,871.08x = 136,219.14 × 55,820.76
  4. Step 4: Simplify right side
    90,871.08x = 7,603,855,921.35
  5. Step 5: Solve for x
    x = 7,603,855,921.35/90,871.08
  6. Step 6: Final answer
    x = 83,677.40

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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.