Home / 91,405.32-126,193.80-57,442.56

Finding the Fourth Proportional to 91,405.32, 126,193.80 and 57,442.56

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Solution

The fourth proportional to 91,405.32, 126,193.80 and 57,442.56 is: 79,304.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,405.32 : 126,193.80 = 57,442.56 : x
  2. Step 2: Convert to fraction form
    91,405.32/126,193.80 = 57,442.56/x
  3. Step 3: Cross multiply
    91,405.32x = 126,193.80 × 57,442.56
  4. Step 4: Simplify right side
    91,405.32x = 7,248,894,928.13
  5. Step 5: Solve for x
    x = 7,248,894,928.13/91,405.32
  6. Step 6: Final answer
    x = 79,304.96

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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.