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Finding the Fourth Proportional to 92,957.80, 128,215.78 and 57,168.04

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Solution

The fourth proportional to 92,957.80, 128,215.78 and 57,168.04 is: 78,851.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,957.80 : 128,215.78 = 57,168.04 : x
  2. Step 2: Convert to fraction form
    92,957.80/128,215.78 = 57,168.04/x
  3. Step 3: Cross multiply
    92,957.80x = 128,215.78 × 57,168.04
  4. Step 4: Simplify right side
    92,957.80x = 7,329,844,839.67
  5. Step 5: Solve for x
    x = 7,329,844,839.67/92,957.80
  6. Step 6: Final answer
    x = 78,851.32

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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.