Home / 91,088.10-136,561.05-57,801.96

Finding the Fourth Proportional to 91,088.10, 136,561.05 and 57,801.96

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Solution

The fourth proportional to 91,088.10, 136,561.05 and 57,801.96 is: 86,657.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,088.10 : 136,561.05 = 57,801.96 : x
  2. Step 2: Convert to fraction form
    91,088.10/136,561.05 = 57,801.96/x
  3. Step 3: Cross multiply
    91,088.10x = 136,561.05 × 57,801.96
  4. Step 4: Simplify right side
    91,088.10x = 7,893,496,349.66
  5. Step 5: Solve for x
    x = 7,893,496,349.66/91,088.10
  6. Step 6: Final answer
    x = 86,657.82

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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.