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Finding the Fourth Proportional to 145,440.80, 218,071.80 and 56,590.82

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Solution

The fourth proportional to 145,440.80, 218,071.80 and 56,590.82 is: 84,851.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,440.80 : 218,071.80 = 56,590.82 : x
  2. Step 2: Convert to fraction form
    145,440.80/218,071.80 = 56,590.82/x
  3. Step 3: Cross multiply
    145,440.80x = 218,071.80 × 56,590.82
  4. Step 4: Simplify right side
    145,440.80x = 12,340,861,980.88
  5. Step 5: Solve for x
    x = 12,340,861,980.88/145,440.80
  6. Step 6: Final answer
    x = 84,851.44

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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.