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Finding the Fourth Proportional to 61,488.46, 92,242.40 and 21,518.60

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Solution

The fourth proportional to 61,488.46, 92,242.40 and 21,518.60 is: 32,281.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,488.46 : 92,242.40 = 21,518.60 : x
  2. Step 2: Convert to fraction form
    61,488.46/92,242.40 = 21,518.60/x
  3. Step 3: Cross multiply
    61,488.46x = 92,242.40 × 21,518.60
  4. Step 4: Simplify right side
    61,488.46x = 1,984,927,431.65
  5. Step 5: Solve for x
    x = 1,984,927,431.65/61,488.46
  6. Step 6: Final answer
    x = 32,281.30

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.