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Finding the Fourth Proportional to 70,820.60, 97,749.05 and 40,605.38

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Solution

The fourth proportional to 70,820.60, 97,749.05 and 40,605.38 is: 56,044.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,820.60 : 97,749.05 = 40,605.38 : x
  2. Step 2: Convert to fraction form
    70,820.60/97,749.05 = 40,605.38/x
  3. Step 3: Cross multiply
    70,820.60x = 97,749.05 × 40,605.38
  4. Step 4: Simplify right side
    70,820.60x = 3,969,136,628.12
  5. Step 5: Solve for x
    x = 3,969,136,628.12/70,820.60
  6. Step 6: Final answer
    x = 56,044.95

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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.