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Finding the Fourth Proportional to 101,038.60, 139,432.98 and 58,621.96

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Solution

The fourth proportional to 101,038.60, 139,432.98 and 58,621.96 is: 80,898.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,038.60 : 139,432.98 = 58,621.96 : x
  2. Step 2: Convert to fraction form
    101,038.60/139,432.98 = 58,621.96/x
  3. Step 3: Cross multiply
    101,038.60x = 139,432.98 × 58,621.96
  4. Step 4: Simplify right side
    101,038.60x = 8,173,834,576.24
  5. Step 5: Solve for x
    x = 8,173,834,576.24/101,038.60
  6. Step 6: Final answer
    x = 80,898.14

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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.