Home / 145,215.08-217,823.64-40,039.76

Finding the Fourth Proportional to 145,215.08, 217,823.64 and 40,039.76

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Solution

The fourth proportional to 145,215.08, 217,823.64 and 40,039.76 is: 60,059.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,215.08 : 217,823.64 = 40,039.76 : x
  2. Step 2: Convert to fraction form
    145,215.08/217,823.64 = 40,039.76/x
  3. Step 3: Cross multiply
    145,215.08x = 217,823.64 × 40,039.76
  4. Step 4: Simplify right side
    145,215.08x = 8,721,606,267.93
  5. Step 5: Solve for x
    x = 8,721,606,267.93/145,215.08
  6. Step 6: Final answer
    x = 60,059.92

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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.