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Finding the Fourth Proportional to 70,043.34, 96,655.86 and 39,824.40

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Solution

The fourth proportional to 70,043.34, 96,655.86 and 39,824.40 is: 54,955.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,043.34 : 96,655.86 = 39,824.40 : x
  2. Step 2: Convert to fraction form
    70,043.34/96,655.86 = 39,824.40/x
  3. Step 3: Cross multiply
    70,043.34x = 96,655.86 × 39,824.40
  4. Step 4: Simplify right side
    70,043.34x = 3,849,261,630.98
  5. Step 5: Solve for x
    x = 3,849,261,630.98/70,043.34
  6. Step 6: Final answer
    x = 54,955.43

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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.