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Finding the Fourth Proportional to 70,529.20, 105,541.02 and 61,074.06

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Solution

The fourth proportional to 70,529.20, 105,541.02 and 61,074.06 is: 91,392.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,529.20 : 105,541.02 = 61,074.06 : x
  2. Step 2: Convert to fraction form
    70,529.20/105,541.02 = 61,074.06/x
  3. Step 3: Cross multiply
    70,529.20x = 105,541.02 × 61,074.06
  4. Step 4: Simplify right side
    70,529.20x = 6,445,818,587.94
  5. Step 5: Solve for x
    x = 6,445,818,587.94/70,529.20
  6. Step 6: Final answer
    x = 91,392.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.