Home / 91,070.12-136,620.98-27,888.76

Finding the Fourth Proportional to 91,070.12, 136,620.98 and 27,888.76

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Solution

The fourth proportional to 91,070.12, 136,620.98 and 27,888.76 is: 41,837.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,070.12 : 136,620.98 = 27,888.76 : x
  2. Step 2: Convert to fraction form
    91,070.12/136,620.98 = 27,888.76/x
  3. Step 3: Cross multiply
    91,070.12x = 136,620.98 × 27,888.76
  4. Step 4: Simplify right side
    91,070.12x = 3,810,189,089.61
  5. Step 5: Solve for x
    x = 3,810,189,089.61/91,070.12
  6. Step 6: Final answer
    x = 41,837.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.