Home / 91,316.48-125,782.38-64,411.70

Finding the Fourth Proportional to 91,316.48, 125,782.38 and 64,411.70

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Solution

The fourth proportional to 91,316.48, 125,782.38 and 64,411.70 is: 88,722.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,316.48 : 125,782.38 = 64,411.70 : x
  2. Step 2: Convert to fraction form
    91,316.48/125,782.38 = 64,411.70/x
  3. Step 3: Cross multiply
    91,316.48x = 125,782.38 × 64,411.70
  4. Step 4: Simplify right side
    91,316.48x = 8,101,856,925.85
  5. Step 5: Solve for x
    x = 8,101,856,925.85/91,316.48
  6. Step 6: Final answer
    x = 88,722.83

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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.