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Finding the Fourth Proportional to 101,621.60, 152,448.64 and 42,426.80

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Solution

The fourth proportional to 101,621.60, 152,448.64 and 42,426.80 is: 63,646.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,621.60 : 152,448.64 = 42,426.80 : x
  2. Step 2: Convert to fraction form
    101,621.60/152,448.64 = 42,426.80/x
  3. Step 3: Cross multiply
    101,621.60x = 152,448.64 × 42,426.80
  4. Step 4: Simplify right side
    101,621.60x = 6,467,907,959.55
  5. Step 5: Solve for x
    x = 6,467,907,959.55/101,621.60
  6. Step 6: Final answer
    x = 63,646.98

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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.