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Finding the Fourth Proportional to 92,977.80, 139,466.70 and 55,580.10

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Solution

The fourth proportional to 92,977.80, 139,466.70 and 55,580.10 is: 83,370.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,977.80 : 139,466.70 = 55,580.10 : x
  2. Step 2: Convert to fraction form
    92,977.80/139,466.70 = 55,580.10/x
  3. Step 3: Cross multiply
    92,977.80x = 139,466.70 × 55,580.10
  4. Step 4: Simplify right side
    92,977.80x = 7,751,573,132.67
  5. Step 5: Solve for x
    x = 7,751,573,132.67/92,977.80
  6. Step 6: Final answer
    x = 83,370.15

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.