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Finding the Fourth Proportional to 84,835.71, 127,253.44 and 21,655.83

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Solution

The fourth proportional to 84,835.71, 127,253.44 and 21,655.83 is: 32,483.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,835.71 : 127,253.44 = 21,655.83 : x
  2. Step 2: Convert to fraction form
    84,835.71/127,253.44 = 21,655.83/x
  3. Step 3: Cross multiply
    84,835.71x = 127,253.44 × 21,655.83
  4. Step 4: Simplify right side
    84,835.71x = 2,755,779,367.83
  5. Step 5: Solve for x
    x = 2,755,779,367.83/84,835.71
  6. Step 6: Final answer
    x = 32,483.72

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1.5x scale

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.