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Finding the Fourth Proportional to 70,302.93, 105,433.46 and 38,276.88

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Solution

The fourth proportional to 70,302.93, 105,433.46 and 38,276.88 is: 57,403.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,302.93 : 105,433.46 = 38,276.88 : x
  2. Step 2: Convert to fraction form
    70,302.93/105,433.46 = 38,276.88/x
  3. Step 3: Cross multiply
    70,302.93x = 105,433.46 × 38,276.88
  4. Step 4: Simplify right side
    70,302.93x = 4,035,663,896.40
  5. Step 5: Solve for x
    x = 4,035,663,896.40/70,302.93
  6. Step 6: Final answer
    x = 57,403.92

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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.