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Finding the Fourth Proportional to 70,312.40, 105,414.60 and 35,277.20

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Solution

The fourth proportional to 70,312.40, 105,414.60 and 35,277.20 is: 52,888.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,312.40 : 105,414.60 = 35,277.20 : x
  2. Step 2: Convert to fraction form
    70,312.40/105,414.60 = 35,277.20/x
  3. Step 3: Cross multiply
    70,312.40x = 105,414.60 × 35,277.20
  4. Step 4: Simplify right side
    70,312.40x = 3,718,731,927.12
  5. Step 5: Solve for x
    x = 3,718,731,927.12/70,312.40
  6. Step 6: Final answer
    x = 52,888.71

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1.5x scale

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.