Home / 72,163.31-99,520.83-45,308.30

Finding the Fourth Proportional to 72,163.31, 99,520.83 and 45,308.30

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Solution

The fourth proportional to 72,163.31, 99,520.83 and 45,308.30 is: 62,484.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,163.31 : 99,520.83 = 45,308.30 : x
  2. Step 2: Convert to fraction form
    72,163.31/99,520.83 = 45,308.30/x
  3. Step 3: Cross multiply
    72,163.31x = 99,520.83 × 45,308.30
  4. Step 4: Simplify right side
    72,163.31x = 4,509,119,124.28
  5. Step 5: Solve for x
    x = 4,509,119,124.28/72,163.31
  6. Step 6: Final answer
    x = 62,484.93

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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.