Home / 75,048.16-112,461-30,621.28

Finding the Fourth Proportional to 75,048.16, 112,461 and 30,621.28

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Solution

The fourth proportional to 75,048.16, 112,461 and 30,621.28 is: 45,886.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,048.16 : 112,461 = 30,621.28 : x
  2. Step 2: Convert to fraction form
    75,048.16/112,461 = 30,621.28/x
  3. Step 3: Cross multiply
    75,048.16x = 112,461 × 30,621.28
  4. Step 4: Simplify right side
    75,048.16x = 3,443,699,770.08
  5. Step 5: Solve for x
    x = 3,443,699,770.08/75,048.16
  6. Step 6: Final answer
    x = 45,886.53

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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.