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Finding the Fourth Proportional to 89,927.40, 134,891.10 and 56,539.20

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Solution

The fourth proportional to 89,927.40, 134,891.10 and 56,539.20 is: 84,808.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,927.40 : 134,891.10 = 56,539.20 : x
  2. Step 2: Convert to fraction form
    89,927.40/134,891.10 = 56,539.20/x
  3. Step 3: Cross multiply
    89,927.40x = 134,891.10 × 56,539.20
  4. Step 4: Simplify right side
    89,927.40x = 7,626,634,881.12
  5. Step 5: Solve for x
    x = 7,626,634,881.12/89,927.40
  6. Step 6: Final answer
    x = 84,808.80

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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.