Home / 91,720.86-126,516.51-66,264.59

Finding the Fourth Proportional to 91,720.86, 126,516.51 and 66,264.59

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Solution

The fourth proportional to 91,720.86, 126,516.51 and 66,264.59 is: 91,403.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,720.86 : 126,516.51 = 66,264.59 : x
  2. Step 2: Convert to fraction form
    91,720.86/126,516.51 = 66,264.59/x
  3. Step 3: Cross multiply
    91,720.86x = 126,516.51 × 66,264.59
  4. Step 4: Simplify right side
    91,720.86x = 8,383,564,030.80
  5. Step 5: Solve for x
    x = 8,383,564,030.80/91,720.86
  6. Step 6: Final answer
    x = 91,403.02

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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.