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Finding the Fourth Proportional to 70,909.71, 97,856.07 and 39,079.77

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Solution

The fourth proportional to 70,909.71, 97,856.07 and 39,079.77 is: 53,930.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,909.71 : 97,856.07 = 39,079.77 : x
  2. Step 2: Convert to fraction form
    70,909.71/97,856.07 = 39,079.77/x
  3. Step 3: Cross multiply
    70,909.71x = 97,856.07 × 39,079.77
  4. Step 4: Simplify right side
    70,909.71x = 3,824,192,708.70
  5. Step 5: Solve for x
    x = 3,824,192,708.70/70,909.71
  6. Step 6: Final answer
    x = 53,930.45

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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.