Home / 89,345.16-133,997.27-53,331.78

Finding the Fourth Proportional to 89,345.16, 133,997.27 and 53,331.78

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Solution

The fourth proportional to 89,345.16, 133,997.27 and 53,331.78 is: 79,985.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,345.16 : 133,997.27 = 53,331.78 : x
  2. Step 2: Convert to fraction form
    89,345.16/133,997.27 = 53,331.78/x
  3. Step 3: Cross multiply
    89,345.16x = 133,997.27 × 53,331.78
  4. Step 4: Simplify right side
    89,345.16x = 7,146,312,924.24
  5. Step 5: Solve for x
    x = 7,146,312,924.24/89,345.16
  6. Step 6: Final answer
    x = 79,985.45

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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.