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Finding the Fourth Proportional to 72,246.52, 99,719.50 and 67,840.76

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Solution

The fourth proportional to 72,246.52, 99,719.50 and 67,840.76 is: 93,638.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,246.52 : 99,719.50 = 67,840.76 : x
  2. Step 2: Convert to fraction form
    72,246.52/99,719.50 = 67,840.76/x
  3. Step 3: Cross multiply
    72,246.52x = 99,719.50 × 67,840.76
  4. Step 4: Simplify right side
    72,246.52x = 6,765,046,666.82
  5. Step 5: Solve for x
    x = 6,765,046,666.82/72,246.52
  6. Step 6: Final answer
    x = 93,638.37

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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.