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Finding the Fourth Proportional to 92,784.60, 128,043.72 and 52,498.80

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Solution

The fourth proportional to 92,784.60, 128,043.72 and 52,498.80 is: 72,448.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,784.60 : 128,043.72 = 52,498.80 : x
  2. Step 2: Convert to fraction form
    92,784.60/128,043.72 = 52,498.80/x
  3. Step 3: Cross multiply
    92,784.60x = 128,043.72 × 52,498.80
  4. Step 4: Simplify right side
    92,784.60x = 6,722,141,647.54
  5. Step 5: Solve for x
    x = 6,722,141,647.54/92,784.60
  6. Step 6: Final answer
    x = 72,448.89

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1.5x scale

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.