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Finding the Fourth Proportional to 70,637.60, 106,033.20 and 39,533.60

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Solution

The fourth proportional to 70,637.60, 106,033.20 and 39,533.60 is: 59,343.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,637.60 : 106,033.20 = 39,533.60 : x
  2. Step 2: Convert to fraction form
    70,637.60/106,033.20 = 39,533.60/x
  3. Step 3: Cross multiply
    70,637.60x = 106,033.20 × 39,533.60
  4. Step 4: Simplify right side
    70,637.60x = 4,191,874,115.52
  5. Step 5: Solve for x
    x = 4,191,874,115.52/70,637.60
  6. Step 6: Final answer
    x = 59,343.38

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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.