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Finding the Fourth Proportional to 76,604.04, 105,712.56 and 43,070.04

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Solution

The fourth proportional to 76,604.04, 105,712.56 and 43,070.04 is: 59,436.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,604.04 : 105,712.56 = 43,070.04 : x
  2. Step 2: Convert to fraction form
    76,604.04/105,712.56 = 43,070.04/x
  3. Step 3: Cross multiply
    76,604.04x = 105,712.56 × 43,070.04
  4. Step 4: Simplify right side
    76,604.04x = 4,553,044,187.70
  5. Step 5: Solve for x
    x = 4,553,044,187.70/76,604.04
  6. Step 6: Final answer
    x = 59,436.08

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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.