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Finding the Fourth Proportional to 78,814.08, 108,762.48 and 45,280.08

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Solution

The fourth proportional to 78,814.08, 108,762.48 and 45,280.08 is: 62,485.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,814.08 : 108,762.48 = 45,280.08 : x
  2. Step 2: Convert to fraction form
    78,814.08/108,762.48 = 45,280.08/x
  3. Step 3: Cross multiply
    78,814.08x = 108,762.48 × 45,280.08
  4. Step 4: Simplify right side
    78,814.08x = 4,924,773,795.40
  5. Step 5: Solve for x
    x = 4,924,773,795.40/78,814.08
  6. Step 6: Final answer
    x = 62,485.96

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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.