Home / 53,638.56-74,020.32-30,977.28

Finding the Fourth Proportional to 53,638.56, 74,020.32 and 30,977.28

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Solution

The fourth proportional to 53,638.56, 74,020.32 and 30,977.28 is: 42,748.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,638.56 : 74,020.32 = 30,977.28 : x
  2. Step 2: Convert to fraction form
    53,638.56/74,020.32 = 30,977.28/x
  3. Step 3: Cross multiply
    53,638.56x = 74,020.32 × 30,977.28
  4. Step 4: Simplify right side
    53,638.56x = 2,292,948,178.33
  5. Step 5: Solve for x
    x = 2,292,948,178.33/53,638.56
  6. Step 6: Final answer
    x = 42,748.13

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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.