Home / 78,580.36-108,437.58-42,770.44

Finding the Fourth Proportional to 78,580.36, 108,437.58 and 42,770.44

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Solution

The fourth proportional to 78,580.36, 108,437.58 and 42,770.44 is: 59,021.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,580.36 : 108,437.58 = 42,770.44 : x
  2. Step 2: Convert to fraction form
    78,580.36/108,437.58 = 42,770.44/x
  3. Step 3: Cross multiply
    78,580.36x = 108,437.58 × 42,770.44
  4. Step 4: Simplify right side
    78,580.36x = 4,637,923,009.14
  5. Step 5: Solve for x
    x = 4,637,923,009.14/78,580.36
  6. Step 6: Final answer
    x = 59,021.40

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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.