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Finding the Fourth Proportional to 56,638.80, 84,881.40 and 40,203.60

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Solution

The fourth proportional to 56,638.80, 84,881.40 and 40,203.60 is: 60,250.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,638.80 : 84,881.40 = 40,203.60 : x
  2. Step 2: Convert to fraction form
    56,638.80/84,881.40 = 40,203.60/x
  3. Step 3: Cross multiply
    56,638.80x = 84,881.40 × 40,203.60
  4. Step 4: Simplify right side
    56,638.80x = 3,412,537,853.04
  5. Step 5: Solve for x
    x = 3,412,537,853.04/56,638.80
  6. Step 6: Final answer
    x = 60,250.89

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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.