Home / 53,650.55-74,041.29-30,990.49

Finding the Fourth Proportional to 53,650.55, 74,041.29 and 30,990.49

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Solution

The fourth proportional to 53,650.55, 74,041.29 and 30,990.49 is: 42,768.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,650.55 : 74,041.29 = 30,990.49 : x
  2. Step 2: Convert to fraction form
    53,650.55/74,041.29 = 30,990.49/x
  3. Step 3: Cross multiply
    53,650.55x = 74,041.29 × 30,990.49
  4. Step 4: Simplify right side
    53,650.55x = 2,294,575,672.23
  5. Step 5: Solve for x
    x = 2,294,575,672.23/53,650.55
  6. Step 6: Final answer
    x = 42,768.92

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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.