Home / 30,129.47-45,149.63-28,444.49

Finding the Fourth Proportional to 30,129.47, 45,149.63 and 28,444.49

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Solution

The fourth proportional to 30,129.47, 45,149.63 and 28,444.49 is: 42,624.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,129.47 : 45,149.63 = 28,444.49 : x
  2. Step 2: Convert to fraction form
    30,129.47/45,149.63 = 28,444.49/x
  3. Step 3: Cross multiply
    30,129.47x = 45,149.63 × 28,444.49
  4. Step 4: Simplify right side
    30,129.47x = 1,284,257,973.29
  5. Step 5: Solve for x
    x = 1,284,257,973.29/30,129.47
  6. Step 6: Final answer
    x = 42,624.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.