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Finding the Fourth Proportional to 77,807.60, 116,711.40 and 74,394.80

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Solution

The fourth proportional to 77,807.60, 116,711.40 and 74,394.80 is: 111,592.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,807.60 : 116,711.40 = 74,394.80 : x
  2. Step 2: Convert to fraction form
    77,807.60/116,711.40 = 74,394.80/x
  3. Step 3: Cross multiply
    77,807.60x = 116,711.40 × 74,394.80
  4. Step 4: Simplify right side
    77,807.60x = 8,682,721,260.72
  5. Step 5: Solve for x
    x = 8,682,721,260.72/77,807.60
  6. Step 6: Final answer
    x = 111,592.20

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1.5x scale

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.