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Finding the Fourth Proportional to 48,415.68, 72,602.88 and 18,424.80

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Solution

The fourth proportional to 48,415.68, 72,602.88 and 18,424.80 is: 27,629.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,415.68 : 72,602.88 = 18,424.80 : x
  2. Step 2: Convert to fraction form
    48,415.68/72,602.88 = 18,424.80/x
  3. Step 3: Cross multiply
    48,415.68x = 72,602.88 × 18,424.80
  4. Step 4: Simplify right side
    48,415.68x = 1,337,693,543.42
  5. Step 5: Solve for x
    x = 1,337,693,543.42/48,415.68
  6. Step 6: Final answer
    x = 27,629.35

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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.