Home / 56,018.12-83,939.67-47,663.78

Finding the Fourth Proportional to 56,018.12, 83,939.67 and 47,663.78

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Solution

The fourth proportional to 56,018.12, 83,939.67 and 47,663.78 is: 71,421.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,018.12 : 83,939.67 = 47,663.78 : x
  2. Step 2: Convert to fraction form
    56,018.12/83,939.67 = 47,663.78/x
  3. Step 3: Cross multiply
    56,018.12x = 83,939.67 × 47,663.78
  4. Step 4: Simplify right side
    56,018.12x = 4,000,881,544.45
  5. Step 5: Solve for x
    x = 4,000,881,544.45/56,018.12
  6. Step 6: Final answer
    x = 71,421.21

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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.