Home / 78,211.54-107,903.64-51,368.59

Finding the Fourth Proportional to 78,211.54, 107,903.64 and 51,368.59

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Solution

The fourth proportional to 78,211.54, 107,903.64 and 51,368.59 is: 70,870.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,211.54 : 107,903.64 = 51,368.59 : x
  2. Step 2: Convert to fraction form
    78,211.54/107,903.64 = 51,368.59/x
  3. Step 3: Cross multiply
    78,211.54x = 107,903.64 × 51,368.59
  4. Step 4: Simplify right side
    78,211.54x = 5,542,857,842.67
  5. Step 5: Solve for x
    x = 5,542,857,842.67/78,211.54
  6. Step 6: Final answer
    x = 70,870.08

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1.5x scale

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.