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Finding the Fourth Proportional to 99,491.96, 137,291.99 and 56,472.35

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Solution

The fourth proportional to 99,491.96, 137,291.99 and 56,472.35 is: 77,927.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,491.96 : 137,291.99 = 56,472.35 : x
  2. Step 2: Convert to fraction form
    99,491.96/137,291.99 = 56,472.35/x
  3. Step 3: Cross multiply
    99,491.96x = 137,291.99 × 56,472.35
  4. Step 4: Simplify right side
    99,491.96x = 7,753,200,342.65
  5. Step 5: Solve for x
    x = 7,753,200,342.65/99,491.96
  6. Step 6: Final answer
    x = 77,927.91

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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.