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Finding the Fourth Proportional to 86,970.78, 130,505.40 and 37,045.68

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Solution

The fourth proportional to 86,970.78, 130,505.40 and 37,045.68 is: 55,589.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,970.78 : 130,505.40 = 37,045.68 : x
  2. Step 2: Convert to fraction form
    86,970.78/130,505.40 = 37,045.68/x
  3. Step 3: Cross multiply
    86,970.78x = 130,505.40 × 37,045.68
  4. Step 4: Simplify right side
    86,970.78x = 4,834,661,286.67
  5. Step 5: Solve for x
    x = 4,834,661,286.67/86,970.78
  6. Step 6: Final answer
    x = 55,589.49

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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.