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Finding the Fourth Proportional to 56,489.59, 84,682.06 and 20,931.09

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Solution

The fourth proportional to 56,489.59, 84,682.06 and 20,931.09 is: 31,377.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,489.59 : 84,682.06 = 20,931.09 : x
  2. Step 2: Convert to fraction form
    56,489.59/84,682.06 = 20,931.09/x
  3. Step 3: Cross multiply
    56,489.59x = 84,682.06 × 20,931.09
  4. Step 4: Simplify right side
    56,489.59x = 1,772,487,925.70
  5. Step 5: Solve for x
    x = 1,772,487,925.70/56,489.59
  6. Step 6: Final answer
    x = 31,377.25

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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.