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Finding the Fourth Proportional to 53,644.95, 74,040.84 and 30,987.63

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Solution

The fourth proportional to 53,644.95, 74,040.84 and 30,987.63 is: 42,769.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,644.95 : 74,040.84 = 30,987.63 : x
  2. Step 2: Convert to fraction form
    53,644.95/74,040.84 = 30,987.63/x
  3. Step 3: Cross multiply
    53,644.95x = 74,040.84 × 30,987.63
  4. Step 4: Simplify right side
    53,644.95x = 2,294,350,154.81
  5. Step 5: Solve for x
    x = 2,294,350,154.81/53,644.95
  6. Step 6: Final answer
    x = 42,769.17

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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.