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Finding the Fourth Proportional to 78,880.32, 108,854.88 and 45,344.32

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Solution

The fourth proportional to 78,880.32, 108,854.88 and 45,344.32 is: 62,575.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,880.32 : 108,854.88 = 45,344.32 : x
  2. Step 2: Convert to fraction form
    78,880.32/108,854.88 = 45,344.32/x
  3. Step 3: Cross multiply
    78,880.32x = 108,854.88 × 45,344.32
  4. Step 4: Simplify right side
    78,880.32x = 4,935,950,512.28
  5. Step 5: Solve for x
    x = 4,935,950,512.28/78,880.32
  6. Step 6: Final answer
    x = 62,575.18

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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.