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Finding the Fourth Proportional to 59,877.60, 89,816.40 and 53,138.40

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Solution

The fourth proportional to 59,877.60, 89,816.40 and 53,138.40 is: 79,707.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    59,877.60 : 89,816.40 = 53,138.40 : x
  2. Step 2: Convert to fraction form
    59,877.60/89,816.40 = 53,138.40/x
  3. Step 3: Cross multiply
    59,877.60x = 89,816.40 × 53,138.40
  4. Step 4: Simplify right side
    59,877.60x = 4,772,699,789.76
  5. Step 5: Solve for x
    x = 4,772,699,789.76/59,877.60
  6. Step 6: Final answer
    x = 79,707.60

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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.