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Finding the Fourth Proportional to 87,263.76, 130,921.02 and 42,903.84

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Solution

The fourth proportional to 87,263.76, 130,921.02 and 42,903.84 is: 64,368.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,263.76 : 130,921.02 = 42,903.84 : x
  2. Step 2: Convert to fraction form
    87,263.76/130,921.02 = 42,903.84/x
  3. Step 3: Cross multiply
    87,263.76x = 130,921.02 × 42,903.84
  4. Step 4: Simplify right side
    87,263.76x = 5,617,014,494.72
  5. Step 5: Solve for x
    x = 5,617,014,494.72/87,263.76
  6. Step 6: Final answer
    x = 64,368.24

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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.