Home / 55,120.31-75,931.04-39,968.45

Finding the Fourth Proportional to 55,120.31, 75,931.04 and 39,968.45

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Solution

The fourth proportional to 55,120.31, 75,931.04 and 39,968.45 is: 55,058.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,120.31 : 75,931.04 = 39,968.45 : x
  2. Step 2: Convert to fraction form
    55,120.31/75,931.04 = 39,968.45/x
  3. Step 3: Cross multiply
    55,120.31x = 75,931.04 × 39,968.45
  4. Step 4: Simplify right side
    55,120.31x = 3,034,845,695.95
  5. Step 5: Solve for x
    x = 3,034,845,695.95/55,120.31
  6. Step 6: Final answer
    x = 55,058.58

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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.