Home / 72,059.31-99,437.67-40,230.21

Finding the Fourth Proportional to 72,059.31, 99,437.67 and 40,230.21

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Solution

The fourth proportional to 72,059.31, 99,437.67 and 40,230.21 is: 55,515.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,059.31 : 99,437.67 = 40,230.21 : x
  2. Step 2: Convert to fraction form
    72,059.31/99,437.67 = 40,230.21/x
  3. Step 3: Cross multiply
    72,059.31x = 99,437.67 × 40,230.21
  4. Step 4: Simplify right side
    72,059.31x = 4,000,398,346.01
  5. Step 5: Solve for x
    x = 4,000,398,346.01/72,059.31
  6. Step 6: Final answer
    x = 55,515.36

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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.