Home / 78,931.18-118,392.90-29,007.44

Finding the Fourth Proportional to 78,931.18, 118,392.90 and 29,007.44

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Solution

The fourth proportional to 78,931.18, 118,392.90 and 29,007.44 is: 43,509.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,931.18 : 118,392.90 = 29,007.44 : x
  2. Step 2: Convert to fraction form
    78,931.18/118,392.90 = 29,007.44/x
  3. Step 3: Cross multiply
    78,931.18x = 118,392.90 × 29,007.44
  4. Step 4: Simplify right side
    78,931.18x = 3,434,274,943.18
  5. Step 5: Solve for x
    x = 3,434,274,943.18/78,931.18
  6. Step 6: Final answer
    x = 43,509.74

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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.