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Finding the Fourth Proportional to 60,278.08, 90,406.80 and 15,905.30

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Solution

The fourth proportional to 60,278.08, 90,406.80 and 15,905.30 is: 23,855.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,278.08 : 90,406.80 = 15,905.30 : x
  2. Step 2: Convert to fraction form
    60,278.08/90,406.80 = 15,905.30/x
  3. Step 3: Cross multiply
    60,278.08x = 90,406.80 × 15,905.30
  4. Step 4: Simplify right side
    60,278.08x = 1,437,947,276.04
  5. Step 5: Solve for x
    x = 1,437,947,276.04/60,278.08
  6. Step 6: Final answer
    x = 23,855.23

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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.