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Finding the Fourth Proportional to 51,263.40, 76,903.02 and 21,681.40

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Solution

The fourth proportional to 51,263.40, 76,903.02 and 21,681.40 is: 32,525.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,263.40 : 76,903.02 = 21,681.40 : x
  2. Step 2: Convert to fraction form
    51,263.40/76,903.02 = 21,681.40/x
  3. Step 3: Cross multiply
    51,263.40x = 76,903.02 × 21,681.40
  4. Step 4: Simplify right side
    51,263.40x = 1,667,365,137.83
  5. Step 5: Solve for x
    x = 1,667,365,137.83/51,263.40
  6. Step 6: Final answer
    x = 32,525.45

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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.