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Finding the Fourth Proportional to 72,809.52, 100,425.60 and 70,370.88

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Solution

The fourth proportional to 72,809.52, 100,425.60 and 70,370.88 is: 97,062.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,809.52 : 100,425.60 = 70,370.88 : x
  2. Step 2: Convert to fraction form
    72,809.52/100,425.60 = 70,370.88/x
  3. Step 3: Cross multiply
    72,809.52x = 100,425.60 × 70,370.88
  4. Step 4: Simplify right side
    72,809.52x = 7,067,037,846.53
  5. Step 5: Solve for x
    x = 7,067,037,846.53/72,809.52
  6. Step 6: Final answer
    x = 97,062.00

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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.