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Finding the Fourth Proportional to 70,759.80, 97,615.80 and 42,416.28

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Solution

The fourth proportional to 70,759.80, 97,615.80 and 42,416.28 is: 58,514.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,759.80 : 97,615.80 = 42,416.28 : x
  2. Step 2: Convert to fraction form
    70,759.80/97,615.80 = 42,416.28/x
  3. Step 3: Cross multiply
    70,759.80x = 97,615.80 × 42,416.28
  4. Step 4: Simplify right side
    70,759.80x = 4,140,499,105.22
  5. Step 5: Solve for x
    x = 4,140,499,105.22/70,759.80
  6. Step 6: Final answer
    x = 58,514.85

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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.