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Finding the Fourth Proportional to 53,534.89, 73,888.50 and 30,888.51

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Solution

The fourth proportional to 53,534.89, 73,888.50 and 30,888.51 is: 42,632.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,534.89 : 73,888.50 = 30,888.51 : x
  2. Step 2: Convert to fraction form
    53,534.89/73,888.50 = 30,888.51/x
  3. Step 3: Cross multiply
    53,534.89x = 73,888.50 × 30,888.51
  4. Step 4: Simplify right side
    53,534.89x = 2,282,305,671.14
  5. Step 5: Solve for x
    x = 2,282,305,671.14/53,534.89
  6. Step 6: Final answer
    x = 42,632.12

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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.