Home / 64,702.46-88,812.36-57,470.78

Finding the Fourth Proportional to 64,702.46, 88,812.36 and 57,470.78

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Solution

The fourth proportional to 64,702.46, 88,812.36 and 57,470.78 is: 78,885.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,702.46 : 88,812.36 = 57,470.78 : x
  2. Step 2: Convert to fraction form
    64,702.46/88,812.36 = 57,470.78/x
  3. Step 3: Cross multiply
    64,702.46x = 88,812.36 × 57,470.78
  4. Step 4: Simplify right side
    64,702.46x = 5,104,115,158.78
  5. Step 5: Solve for x
    x = 5,104,115,158.78/64,702.46
  6. Step 6: Final answer
    x = 78,885.96

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.