Home / 81,378.40-112,292.36-45,565.60

Finding the Fourth Proportional to 81,378.40, 112,292.36 and 45,565.60

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Solution

The fourth proportional to 81,378.40, 112,292.36 and 45,565.60 is: 62,875.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,378.40 : 112,292.36 = 45,565.60 : x
  2. Step 2: Convert to fraction form
    81,378.40/112,292.36 = 45,565.60/x
  3. Step 3: Cross multiply
    81,378.40x = 112,292.36 × 45,565.60
  4. Step 4: Simplify right side
    81,378.40x = 5,116,668,758.82
  5. Step 5: Solve for x
    x = 5,116,668,758.82/81,378.40
  6. Step 6: Final answer
    x = 62,875.02

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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.