Home / 78,518,008.10-108,284,313.38-49,152,017.70

Finding the Fourth Proportional to 78,518,008.10, 108,284,313.38 and 49,152,017.70

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Solution

The fourth proportional to 78,518,008.10, 108,284,313.38 and 49,152,017.70 is: 67,785,627.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,518,008.10 : 108,284,313.38 = 49,152,017.70 : x
  2. Step 2: Convert to fraction form
    78,518,008.10/108,284,313.38 = 49,152,017.70/x
  3. Step 3: Cross multiply
    78,518,008.10x = 108,284,313.38 × 49,152,017.70
  4. Step 4: Simplify right side
    78,518,008.10x = 5,322,392,487,640,347
  5. Step 5: Solve for x
    x = 5,322,392,487,640,347/78,518,008.10
  6. Step 6: Final answer
    x = 67,785,627.99

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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.