Home / 78,603.12-108,486.40-50,307.84

Finding the Fourth Proportional to 78,603.12, 108,486.40 and 50,307.84

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Solution

The fourth proportional to 78,603.12, 108,486.40 and 50,307.84 is: 69,433.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,603.12 : 108,486.40 = 50,307.84 : x
  2. Step 2: Convert to fraction form
    78,603.12/108,486.40 = 50,307.84/x
  3. Step 3: Cross multiply
    78,603.12x = 108,486.40 × 50,307.84
  4. Step 4: Simplify right side
    78,603.12x = 5,457,716,453.38
  5. Step 5: Solve for x
    x = 5,457,716,453.38/78,603.12
  6. Step 6: Final answer
    x = 69,433.84

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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.