Home / 74,422.17-102,702.78-40,430.36

Finding the Fourth Proportional to 74,422.17, 102,702.78 and 40,430.36

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Solution

The fourth proportional to 74,422.17, 102,702.78 and 40,430.36 is: 55,794.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,422.17 : 102,702.78 = 40,430.36 : x
  2. Step 2: Convert to fraction form
    74,422.17/102,702.78 = 40,430.36/x
  3. Step 3: Cross multiply
    74,422.17x = 102,702.78 × 40,430.36
  4. Step 4: Simplify right side
    74,422.17x = 4,152,310,625.16
  5. Step 5: Solve for x
    x = 4,152,310,625.16/74,422.17
  6. Step 6: Final answer
    x = 55,794.00

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.