Home / 40,138.65-55,386.09-23,143.53

Finding the Fourth Proportional to 40,138.65, 55,386.09 and 23,143.53

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Solution

The fourth proportional to 40,138.65, 55,386.09 and 23,143.53 is: 31,935.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,138.65 : 55,386.09 = 23,143.53 : x
  2. Step 2: Convert to fraction form
    40,138.65/55,386.09 = 23,143.53/x
  3. Step 3: Cross multiply
    40,138.65x = 55,386.09 × 23,143.53
  4. Step 4: Simplify right side
    40,138.65x = 1,281,829,635.50
  5. Step 5: Solve for x
    x = 1,281,829,635.50/40,138.65
  6. Step 6: Final answer
    x = 31,935.05

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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.