Home / 91,247.40-136,866.96-31,281.20

Finding the Fourth Proportional to 91,247.40, 136,866.96 and 31,281.20

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Solution

The fourth proportional to 91,247.40, 136,866.96 and 31,281.20 is: 46,920.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,247.40 : 136,866.96 = 31,281.20 : x
  2. Step 2: Convert to fraction form
    91,247.40/136,866.96 = 31,281.20/x
  3. Step 3: Cross multiply
    91,247.40x = 136,866.96 × 31,281.20
  4. Step 4: Simplify right side
    91,247.40x = 4,281,362,749.15
  5. Step 5: Solve for x
    x = 4,281,362,749.15/91,247.40
  6. Step 6: Final answer
    x = 46,920.38

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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.