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Finding the Fourth Proportional to 71,077.50, 98,086.95 and 42,788.66

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Solution

The fourth proportional to 71,077.50, 98,086.95 and 42,788.66 is: 59,048.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,077.50 : 98,086.95 = 42,788.66 : x
  2. Step 2: Convert to fraction form
    71,077.50/98,086.95 = 42,788.66/x
  3. Step 3: Cross multiply
    71,077.50x = 98,086.95 × 42,788.66
  4. Step 4: Simplify right side
    71,077.50x = 4,197,008,663.55
  5. Step 5: Solve for x
    x = 4,197,008,663.55/71,077.50
  6. Step 6: Final answer
    x = 59,048.34

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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.