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Finding the Fourth Proportional to 77,491.34, 106,970.55 and 52,374.86

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Solution

The fourth proportional to 77,491.34, 106,970.55 and 52,374.86 is: 72,299.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,491.34 : 106,970.55 = 52,374.86 : x
  2. Step 2: Convert to fraction form
    77,491.34/106,970.55 = 52,374.86/x
  3. Step 3: Cross multiply
    77,491.34x = 106,970.55 × 52,374.86
  4. Step 4: Simplify right side
    77,491.34x = 5,602,567,580.37
  5. Step 5: Solve for x
    x = 5,602,567,580.37/77,491.34
  6. Step 6: Final answer
    x = 72,299.27

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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.