Home / 92,621.49-127,820.07-56,790.87

Finding the Fourth Proportional to 92,621.49, 127,820.07 and 56,790.87

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Solution

The fourth proportional to 92,621.49, 127,820.07 and 56,790.87 is: 78,372.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,621.49 : 127,820.07 = 56,790.87 : x
  2. Step 2: Convert to fraction form
    92,621.49/127,820.07 = 56,790.87/x
  3. Step 3: Cross multiply
    92,621.49x = 127,820.07 × 56,790.87
  4. Step 4: Simplify right side
    92,621.49x = 7,259,012,978.76
  5. Step 5: Solve for x
    x = 7,259,012,978.76/92,621.49
  6. Step 6: Final answer
    x = 78,372.88

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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.