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Finding the Fourth Proportional to 70,488.66, 97,281.99 and 45,018.42

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Solution

The fourth proportional to 70,488.66, 97,281.99 and 45,018.42 is: 62,130.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,488.66 : 97,281.99 = 45,018.42 : x
  2. Step 2: Convert to fraction form
    70,488.66/97,281.99 = 45,018.42/x
  3. Step 3: Cross multiply
    70,488.66x = 97,281.99 × 45,018.42
  4. Step 4: Simplify right side
    70,488.66x = 4,379,481,484.26
  5. Step 5: Solve for x
    x = 4,379,481,484.26/70,488.66
  6. Step 6: Final answer
    x = 62,130.30

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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.