Home / 90,454.48-124,712.46-64,643.86

Finding the Fourth Proportional to 90,454.48, 124,712.46 and 64,643.86

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Solution

The fourth proportional to 90,454.48, 124,712.46 and 64,643.86 is: 89,126.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,454.48 : 124,712.46 = 64,643.86 : x
  2. Step 2: Convert to fraction form
    90,454.48/124,712.46 = 64,643.86/x
  3. Step 3: Cross multiply
    90,454.48x = 124,712.46 × 64,643.86
  4. Step 4: Simplify right side
    90,454.48x = 8,061,894,804.50
  5. Step 5: Solve for x
    x = 8,061,894,804.50/90,454.48
  6. Step 6: Final answer
    x = 89,126.54

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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.