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Finding the Fourth Proportional to 91,303.92, 125,964.72 and 67,487.76

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Solution

The fourth proportional to 91,303.92, 125,964.72 and 67,487.76 is: 93,107.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,303.92 : 125,964.72 = 67,487.76 : x
  2. Step 2: Convert to fraction form
    91,303.92/125,964.72 = 67,487.76/x
  3. Step 3: Cross multiply
    91,303.92x = 125,964.72 × 67,487.76
  4. Step 4: Simplify right side
    91,303.92x = 8,501,076,791.83
  5. Step 5: Solve for x
    x = 8,501,076,791.83/91,303.92
  6. Step 6: Final answer
    x = 93,107.47

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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.