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Finding the Fourth Proportional to 60,216.40, 90,068.60 and 54,021.20

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Solution

The fourth proportional to 60,216.40, 90,068.60 and 54,021.20 is: 80,802.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,216.40 : 90,068.60 = 54,021.20 : x
  2. Step 2: Convert to fraction form
    60,216.40/90,068.60 = 54,021.20/x
  3. Step 3: Cross multiply
    60,216.40x = 90,068.60 × 54,021.20
  4. Step 4: Simplify right side
    60,216.40x = 4,865,613,854.32
  5. Step 5: Solve for x
    x = 4,865,613,854.32/60,216.40
  6. Step 6: Final answer
    x = 80,802.14

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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.