Home / 81,280.49-112,206.23-54,101.81

Finding the Fourth Proportional to 81,280.49, 112,206.23 and 54,101.81

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Solution

The fourth proportional to 81,280.49, 112,206.23 and 54,101.81 is: 74,686.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,280.49 : 112,206.23 = 54,101.81 : x
  2. Step 2: Convert to fraction form
    81,280.49/112,206.23 = 54,101.81/x
  3. Step 3: Cross multiply
    81,280.49x = 112,206.23 × 54,101.81
  4. Step 4: Simplify right side
    81,280.49x = 6,070,559,304.74
  5. Step 5: Solve for x
    x = 6,070,559,304.74/81,280.49
  6. Step 6: Final answer
    x = 74,686.55

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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.