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Finding the Fourth Proportional to 98,127, 135,429.84 and 57,827.88

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Solution

The fourth proportional to 98,127, 135,429.84 and 57,827.88 is: 79,811.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,127 : 135,429.84 = 57,827.88 : x
  2. Step 2: Convert to fraction form
    98,127/135,429.84 = 57,827.88/x
  3. Step 3: Cross multiply
    98,127x = 135,429.84 × 57,827.88
  4. Step 4: Simplify right side
    98,127x = 7,831,620,535.94
  5. Step 5: Solve for x
    x = 7,831,620,535.94/98,127
  6. Step 6: Final answer
    x = 79,811.07

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1.5x scale

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.