Home / 91,705.15-126,559.16-51,421.49

Finding the Fourth Proportional to 91,705.15, 126,559.16 and 51,421.49

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Solution

The fourth proportional to 91,705.15, 126,559.16 and 51,421.49 is: 70,965.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,705.15 : 126,559.16 = 51,421.49 : x
  2. Step 2: Convert to fraction form
    91,705.15/126,559.16 = 51,421.49/x
  3. Step 3: Cross multiply
    91,705.15x = 126,559.16 × 51,421.49
  4. Step 4: Simplify right side
    91,705.15x = 6,507,860,580.35
  5. Step 5: Solve for x
    x = 6,507,860,580.35/91,705.15
  6. Step 6: Final answer
    x = 70,965.05

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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.