Home / 91,688.58-126,605.43-57,751.74

Finding the Fourth Proportional to 91,688.58, 126,605.43 and 57,751.74

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Solution

The fourth proportional to 91,688.58, 126,605.43 and 57,751.74 is: 79,744.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,688.58 : 126,605.43 = 57,751.74 : x
  2. Step 2: Convert to fraction form
    91,688.58/126,605.43 = 57,751.74/x
  3. Step 3: Cross multiply
    91,688.58x = 126,605.43 × 57,751.74
  4. Step 4: Simplify right side
    91,688.58x = 7,311,683,875.95
  5. Step 5: Solve for x
    x = 7,311,683,875.95/91,688.58
  6. Step 6: Final answer
    x = 79,744.76

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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.