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Finding the Fourth Proportional to 60,259.40, 90,393.72 and 20,278.58

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Solution

The fourth proportional to 60,259.40, 90,393.72 and 20,278.58 is: 30,419.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,259.40 : 90,393.72 = 20,278.58 : x
  2. Step 2: Convert to fraction form
    60,259.40/90,393.72 = 20,278.58/x
  3. Step 3: Cross multiply
    60,259.40x = 90,393.72 × 20,278.58
  4. Step 4: Simplify right side
    60,259.40x = 1,833,056,282.52
  5. Step 5: Solve for x
    x = 1,833,056,282.52/60,259.40
  6. Step 6: Final answer
    x = 30,419.42

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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.