Home / 78,451.40-108,263.07-42,641.32

Finding the Fourth Proportional to 78,451.40, 108,263.07 and 42,641.32

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Solution

The fourth proportional to 78,451.40, 108,263.07 and 42,641.32 is: 58,845.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,451.40 : 108,263.07 = 42,641.32 : x
  2. Step 2: Convert to fraction form
    78,451.40/108,263.07 = 42,641.32/x
  3. Step 3: Cross multiply
    78,451.40x = 108,263.07 × 42,641.32
  4. Step 4: Simplify right side
    78,451.40x = 4,616,479,670.74
  5. Step 5: Solve for x
    x = 4,616,479,670.74/78,451.40
  6. Step 6: Final answer
    x = 58,845.09

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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.