Home / 90,532.30-124,491.45-78,574.81

Finding the Fourth Proportional to 90,532.30, 124,491.45 and 78,574.81

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Solution

The fourth proportional to 90,532.30, 124,491.45 and 78,574.81 is: 108,048.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,532.30 : 124,491.45 = 78,574.81 : x
  2. Step 2: Convert to fraction form
    90,532.30/124,491.45 = 78,574.81/x
  3. Step 3: Cross multiply
    90,532.30x = 124,491.45 × 78,574.81
  4. Step 4: Simplify right side
    90,532.30x = 9,781,892,030.37
  5. Step 5: Solve for x
    x = 9,781,892,030.37/90,532.30
  6. Step 6: Final answer
    x = 108,048.64

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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.