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Finding the Fourth Proportional to 70,803.97, 97,711.87 and 38,539.76

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Solution

The fourth proportional to 70,803.97, 97,711.87 and 38,539.76 is: 53,186.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,803.97 : 97,711.87 = 38,539.76 : x
  2. Step 2: Convert to fraction form
    70,803.97/97,711.87 = 38,539.76/x
  3. Step 3: Cross multiply
    70,803.97x = 97,711.87 × 38,539.76
  4. Step 4: Simplify right side
    70,803.97x = 3,765,791,800.46
  5. Step 5: Solve for x
    x = 3,765,791,800.46/70,803.97
  6. Step 6: Final answer
    x = 53,186.17

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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.