Home / 40,421.34-55,762.14-31,407.18

Finding the Fourth Proportional to 40,421.34, 55,762.14 and 31,407.18

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Solution

The fourth proportional to 40,421.34, 55,762.14 and 31,407.18 is: 43,326.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,421.34 : 55,762.14 = 31,407.18 : x
  2. Step 2: Convert to fraction form
    40,421.34/55,762.14 = 31,407.18/x
  3. Step 3: Cross multiply
    40,421.34x = 55,762.14 × 31,407.18
  4. Step 4: Simplify right side
    40,421.34x = 1,751,331,568.17
  5. Step 5: Solve for x
    x = 1,751,331,568.17/40,421.34
  6. Step 6: Final answer
    x = 43,326.91

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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.