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Finding the Fourth Proportional to 89,307.74, 133,992.12 and 55,987.58

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Solution

The fourth proportional to 89,307.74, 133,992.12 and 55,987.58 is: 84,000.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,307.74 : 133,992.12 = 55,987.58 : x
  2. Step 2: Convert to fraction form
    89,307.74/133,992.12 = 55,987.58/x
  3. Step 3: Cross multiply
    89,307.74x = 133,992.12 × 55,987.58
  4. Step 4: Simplify right side
    89,307.74x = 7,501,894,537.87
  5. Step 5: Solve for x
    x = 7,501,894,537.87/89,307.74
  6. Step 6: Final answer
    x = 84,000.50

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Double scale
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Similar ratio
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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.