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Finding the Fourth Proportional to 76,089.60, 105,001.60 and 42,553.60

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Solution

The fourth proportional to 76,089.60, 105,001.60 and 42,553.60 is: 58,722.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,089.60 : 105,001.60 = 42,553.60 : x
  2. Step 2: Convert to fraction form
    76,089.60/105,001.60 = 42,553.60/x
  3. Step 3: Cross multiply
    76,089.60x = 105,001.60 × 42,553.60
  4. Step 4: Simplify right side
    76,089.60x = 4,468,196,085.76
  5. Step 5: Solve for x
    x = 4,468,196,085.76/76,089.60
  6. Step 6: Final answer
    x = 58,722.82

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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.