Home / 51,242.40-70,703.76-31,109.88

Finding the Fourth Proportional to 51,242.40, 70,703.76 and 31,109.88

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Solution

The fourth proportional to 51,242.40, 70,703.76 and 31,109.88 is: 42,925.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,242.40 : 70,703.76 = 31,109.88 : x
  2. Step 2: Convert to fraction form
    51,242.40/70,703.76 = 31,109.88/x
  3. Step 3: Cross multiply
    51,242.40x = 70,703.76 × 31,109.88
  4. Step 4: Simplify right side
    51,242.40x = 2,199,585,489.15
  5. Step 5: Solve for x
    x = 2,199,585,489.15/51,242.40
  6. Step 6: Final answer
    x = 42,925.11

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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.