Home / 78,776.40-118,164.64-26,185.89

Finding the Fourth Proportional to 78,776.40, 118,164.64 and 26,185.89

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Solution

The fourth proportional to 78,776.40, 118,164.64 and 26,185.89 is: 39,278.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,776.40 : 118,164.64 = 26,185.89 : x
  2. Step 2: Convert to fraction form
    78,776.40/118,164.64 = 26,185.89/x
  3. Step 3: Cross multiply
    78,776.40x = 118,164.64 × 26,185.89
  4. Step 4: Simplify right side
    78,776.40x = 3,094,246,264.93
  5. Step 5: Solve for x
    x = 3,094,246,264.93/78,776.40
  6. Step 6: Final answer
    x = 39,278.85

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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.