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Finding the Fourth Proportional to 70,337.60, 105,592.80 and 38,772.80

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Solution

The fourth proportional to 70,337.60, 105,592.80 and 38,772.80 is: 58,206.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,337.60 : 105,592.80 = 38,772.80 : x
  2. Step 2: Convert to fraction form
    70,337.60/105,592.80 = 38,772.80/x
  3. Step 3: Cross multiply
    70,337.60x = 105,592.80 × 38,772.80
  4. Step 4: Simplify right side
    70,337.60x = 4,094,128,515.84
  5. Step 5: Solve for x
    x = 4,094,128,515.84/70,337.60
  6. Step 6: Final answer
    x = 58,206.83

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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.