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Finding the Fourth Proportional to 60,466.40, 90,699.60 and 18,913.40

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Solution

The fourth proportional to 60,466.40, 90,699.60 and 18,913.40 is: 28,370.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,466.40 : 90,699.60 = 18,913.40 : x
  2. Step 2: Convert to fraction form
    60,466.40/90,699.60 = 18,913.40/x
  3. Step 3: Cross multiply
    60,466.40x = 90,699.60 × 18,913.40
  4. Step 4: Simplify right side
    60,466.40x = 1,715,437,814.64
  5. Step 5: Solve for x
    x = 1,715,437,814.64/60,466.40
  6. Step 6: Final answer
    x = 28,370.10

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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.