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Finding the Fourth Proportional to 70,952.12, 97,812.20 and 55,818.50

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Solution

The fourth proportional to 70,952.12, 97,812.20 and 55,818.50 is: 76,949.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,952.12 : 97,812.20 = 55,818.50 : x
  2. Step 2: Convert to fraction form
    70,952.12/97,812.20 = 55,818.50/x
  3. Step 3: Cross multiply
    70,952.12x = 97,812.20 × 55,818.50
  4. Step 4: Simplify right side
    70,952.12x = 5,459,730,251.14
  5. Step 5: Solve for x
    x = 5,459,730,251.14/70,952.12
  6. Step 6: Final answer
    x = 76,949.50

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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.