Home / 61,140.20-91,710.30-51,298.70

Finding the Fourth Proportional to 61,140.20, 91,710.30 and 51,298.70

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Solution

The fourth proportional to 61,140.20, 91,710.30 and 51,298.70 is: 76,948.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,140.20 : 91,710.30 = 51,298.70 : x
  2. Step 2: Convert to fraction form
    61,140.20/91,710.30 = 51,298.70/x
  3. Step 3: Cross multiply
    61,140.20x = 91,710.30 × 51,298.70
  4. Step 4: Simplify right side
    61,140.20x = 4,704,619,166.61
  5. Step 5: Solve for x
    x = 4,704,619,166.61/61,140.20
  6. Step 6: Final answer
    x = 76,948.05

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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.