Home / 97,854.12-135,038.68-55,420.85

Finding the Fourth Proportional to 97,854.12, 135,038.68 and 55,420.85

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Solution

The fourth proportional to 97,854.12, 135,038.68 and 55,420.85 is: 76,480.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,854.12 : 135,038.68 = 55,420.85 : x
  2. Step 2: Convert to fraction form
    97,854.12/135,038.68 = 55,420.85/x
  3. Step 3: Cross multiply
    97,854.12x = 135,038.68 × 55,420.85
  4. Step 4: Simplify right side
    97,854.12x = 7,483,958,627.52
  5. Step 5: Solve for x
    x = 7,483,958,627.52/97,854.12
  6. Step 6: Final answer
    x = 76,480.77

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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.