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Finding the Fourth Proportional to 56,339.80, 84,482.40 and 28,247.80

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Solution

The fourth proportional to 56,339.80, 84,482.40 and 28,247.80 is: 42,358.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,339.80 : 84,482.40 = 28,247.80 : x
  2. Step 2: Convert to fraction form
    56,339.80/84,482.40 = 28,247.80/x
  3. Step 3: Cross multiply
    56,339.80x = 84,482.40 × 28,247.80
  4. Step 4: Simplify right side
    56,339.80x = 2,386,441,938.72
  5. Step 5: Solve for x
    x = 2,386,441,938.72/56,339.80
  6. Step 6: Final answer
    x = 42,358.01

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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.