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Finding the Fourth Proportional to 55,609.34, 76,748.28 and 31,730.54

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Solution

The fourth proportional to 55,609.34, 76,748.28 and 31,730.54 is: 43,792.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,609.34 : 76,748.28 = 31,730.54 : x
  2. Step 2: Convert to fraction form
    55,609.34/76,748.28 = 31,730.54/x
  3. Step 3: Cross multiply
    55,609.34x = 76,748.28 × 31,730.54
  4. Step 4: Simplify right side
    55,609.34x = 2,435,264,368.47
  5. Step 5: Solve for x
    x = 2,435,264,368.47/55,609.34
  6. Step 6: Final answer
    x = 43,792.36

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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.