Home / 77,420.74-106,815.32-45,148.04

Finding the Fourth Proportional to 77,420.74, 106,815.32 and 45,148.04

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Solution

The fourth proportional to 77,420.74, 106,815.32 and 45,148.04 is: 62,289.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,420.74 : 106,815.32 = 45,148.04 : x
  2. Step 2: Convert to fraction form
    77,420.74/106,815.32 = 45,148.04/x
  3. Step 3: Cross multiply
    77,420.74x = 106,815.32 × 45,148.04
  4. Step 4: Simplify right side
    77,420.74x = 4,822,502,339.97
  5. Step 5: Solve for x
    x = 4,822,502,339.97/77,420.74
  6. Step 6: Final answer
    x = 62,289.54

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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.