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Finding the Fourth Proportional to 70,354.87, 97,070.47 and 45,218.95

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Solution

The fourth proportional to 70,354.87, 97,070.47 and 45,218.95 is: 62,389.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,354.87 : 97,070.47 = 45,218.95 : x
  2. Step 2: Convert to fraction form
    70,354.87/97,070.47 = 45,218.95/x
  3. Step 3: Cross multiply
    70,354.87x = 97,070.47 × 45,218.95
  4. Step 4: Simplify right side
    70,354.87x = 4,389,424,729.41
  5. Step 5: Solve for x
    x = 4,389,424,729.41/70,354.87
  6. Step 6: Final answer
    x = 62,389.78

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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.