Home / 91,780.04-126,645.18-54,047

Finding the Fourth Proportional to 91,780.04, 126,645.18 and 54,047

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Solution

The fourth proportional to 91,780.04, 126,645.18 and 54,047 is: 74,578.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,780.04 : 126,645.18 = 54,047 : x
  2. Step 2: Convert to fraction form
    91,780.04/126,645.18 = 54,047/x
  3. Step 3: Cross multiply
    91,780.04x = 126,645.18 × 54,047
  4. Step 4: Simplify right side
    91,780.04x = 6,844,792,043.46
  5. Step 5: Solve for x
    x = 6,844,792,043.46/91,780.04
  6. Step 6: Final answer
    x = 74,578.22

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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.