Home / 78,312,943.92-108,081,827.16-47,373,334.32

Finding the Fourth Proportional to 78,312,943.92, 108,081,827.16 and 47,373,334.32

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Solution

The fourth proportional to 78,312,943.92, 108,081,827.16 and 47,373,334.32 is: 65,381,229.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,312,943.92 : 108,081,827.16 = 47,373,334.32 : x
  2. Step 2: Convert to fraction form
    78,312,943.92/108,081,827.16 = 47,373,334.32/x
  3. Step 3: Cross multiply
    78,312,943.92x = 108,081,827.16 × 47,373,334.32
  4. Step 4: Simplify right side
    78,312,943.92x = 5,120,196,531,967,136
  5. Step 5: Solve for x
    x = 5,120,196,531,967,136/78,312,943.92
  6. Step 6: Final answer
    x = 65,381,229.15

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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.