Home / 81,424.11-112,357.76-45,615.63

Finding the Fourth Proportional to 81,424.11, 112,357.76 and 45,615.63

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Solution

The fourth proportional to 81,424.11, 112,357.76 and 45,615.63 is: 62,945.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,424.11 : 112,357.76 = 45,615.63 : x
  2. Step 2: Convert to fraction form
    81,424.11/112,357.76 = 45,615.63/x
  3. Step 3: Cross multiply
    81,424.11x = 112,357.76 × 45,615.63
  4. Step 4: Simplify right side
    81,424.11x = 5,125,269,779.71
  5. Step 5: Solve for x
    x = 5,125,269,779.71/81,424.11
  6. Step 6: Final answer
    x = 62,945.36

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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.