Home / 78,729.84-118,074.60-23,312.88

Finding the Fourth Proportional to 78,729.84, 118,074.60 and 23,312.88

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Solution

The fourth proportional to 78,729.84, 118,074.60 and 23,312.88 is: 34,963.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,729.84 : 118,074.60 = 23,312.88 : x
  2. Step 2: Convert to fraction form
    78,729.84/118,074.60 = 23,312.88/x
  3. Step 3: Cross multiply
    78,729.84x = 118,074.60 × 23,312.88
  4. Step 4: Simplify right side
    78,729.84x = 2,752,658,980.85
  5. Step 5: Solve for x
    x = 2,752,658,980.85/78,729.84
  6. Step 6: Final answer
    x = 34,963.35

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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.