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Finding the Fourth Proportional to 91,080.51, 125,648.21 and 59,237.79

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Solution

The fourth proportional to 91,080.51, 125,648.21 and 59,237.79 is: 81,720.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,080.51 : 125,648.21 = 59,237.79 : x
  2. Step 2: Convert to fraction form
    91,080.51/125,648.21 = 59,237.79/x
  3. Step 3: Cross multiply
    91,080.51x = 125,648.21 × 59,237.79
  4. Step 4: Simplify right side
    91,080.51x = 7,443,121,981.67
  5. Step 5: Solve for x
    x = 7,443,121,981.67/91,080.51
  6. Step 6: Final answer
    x = 81,720.25

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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.