Home / 72,439.74-99,971.64-40,610.70

Finding the Fourth Proportional to 72,439.74, 99,971.64 and 40,610.70

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Solution

The fourth proportional to 72,439.74, 99,971.64 and 40,610.70 is: 56,045.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,439.74 : 99,971.64 = 40,610.70 : x
  2. Step 2: Convert to fraction form
    72,439.74/99,971.64 = 40,610.70/x
  3. Step 3: Cross multiply
    72,439.74x = 99,971.64 × 40,610.70
  4. Step 4: Simplify right side
    72,439.74x = 4,059,918,280.55
  5. Step 5: Solve for x
    x = 4,059,918,280.55/72,439.74
  6. Step 6: Final answer
    x = 56,045.46

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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.