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Finding the Fourth Proportional to 70,490.77, 97,278.51 and 38,659.39

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Solution

The fourth proportional to 70,490.77, 97,278.51 and 38,659.39 is: 53,350.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,490.77 : 97,278.51 = 38,659.39 : x
  2. Step 2: Convert to fraction form
    70,490.77/97,278.51 = 38,659.39/x
  3. Step 3: Cross multiply
    70,490.77x = 97,278.51 × 38,659.39
  4. Step 4: Simplify right side
    70,490.77x = 3,760,727,856.71
  5. Step 5: Solve for x
    x = 3,760,727,856.71/70,490.77
  6. Step 6: Final answer
    x = 53,350.64

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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.