Home / 78,964.16-118,437.53-19,799.84

Finding the Fourth Proportional to 78,964.16, 118,437.53 and 19,799.84

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Solution

The fourth proportional to 78,964.16, 118,437.53 and 19,799.84 is: 29,697.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,964.16 : 118,437.53 = 19,799.84 : x
  2. Step 2: Convert to fraction form
    78,964.16/118,437.53 = 19,799.84/x
  3. Step 3: Cross multiply
    78,964.16x = 118,437.53 × 19,799.84
  4. Step 4: Simplify right side
    78,964.16x = 2,345,043,452.81
  5. Step 5: Solve for x
    x = 2,345,043,452.81/78,964.16
  6. Step 6: Final answer
    x = 29,697.57

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1.5x scale

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.