Home / 78,124.48-107,782.04-57,755.46

Finding the Fourth Proportional to 78,124.48, 107,782.04 and 57,755.46

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Solution

The fourth proportional to 78,124.48, 107,782.04 and 57,755.46 is: 79,680.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,124.48 : 107,782.04 = 57,755.46 : x
  2. Step 2: Convert to fraction form
    78,124.48/107,782.04 = 57,755.46/x
  3. Step 3: Cross multiply
    78,124.48x = 107,782.04 × 57,755.46
  4. Step 4: Simplify right side
    78,124.48x = 6,225,001,299.94
  5. Step 5: Solve for x
    x = 6,225,001,299.94/78,124.48
  6. Step 6: Final answer
    x = 79,680.55

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1.5x scale

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.