Home / 56,478.30-78,021.16-45,132.93

Finding the Fourth Proportional to 56,478.30, 78,021.16 and 45,132.93

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Solution

The fourth proportional to 56,478.30, 78,021.16 and 45,132.93 is: 62,348.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,478.30 : 78,021.16 = 45,132.93 : x
  2. Step 2: Convert to fraction form
    56,478.30/78,021.16 = 45,132.93/x
  3. Step 3: Cross multiply
    56,478.30x = 78,021.16 × 45,132.93
  4. Step 4: Simplify right side
    56,478.30x = 3,521,323,552.80
  5. Step 5: Solve for x
    x = 3,521,323,552.80/56,478.30
  6. Step 6: Final answer
    x = 62,348.26

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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.