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Finding the Fourth Proportional to 56,939.04, 85,408.56 and 28,854.72

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Solution

The fourth proportional to 56,939.04, 85,408.56 and 28,854.72 is: 43,282.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,939.04 : 85,408.56 = 28,854.72 : x
  2. Step 2: Convert to fraction form
    56,939.04/85,408.56 = 28,854.72/x
  3. Step 3: Cross multiply
    56,939.04x = 85,408.56 × 28,854.72
  4. Step 4: Simplify right side
    56,939.04x = 2,464,440,084.40
  5. Step 5: Solve for x
    x = 2,464,440,084.40/56,939.04
  6. Step 6: Final answer
    x = 43,282.08

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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.