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Finding the Fourth Proportional to 65,471.52, 90,384.84 and 50,903.40

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Solution

The fourth proportional to 65,471.52, 90,384.84 and 50,903.40 is: 70,273.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,471.52 : 90,384.84 = 50,903.40 : x
  2. Step 2: Convert to fraction form
    65,471.52/90,384.84 = 50,903.40/x
  3. Step 3: Cross multiply
    65,471.52x = 90,384.84 × 50,903.40
  4. Step 4: Simplify right side
    65,471.52x = 4,600,895,664.46
  5. Step 5: Solve for x
    x = 4,600,895,664.46/65,471.52
  6. Step 6: Final answer
    x = 70,273.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.