Home / 78,725,117.40-118,087,676.10-48,334,435.80

Finding the Fourth Proportional to 78,725,117.40, 118,087,676.10 and 48,334,435.80

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Solution

The fourth proportional to 78,725,117.40, 118,087,676.10 and 48,334,435.80 is: 72,501,653.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,725,117.40 : 118,087,676.10 = 48,334,435.80 : x
  2. Step 2: Convert to fraction form
    78,725,117.40/118,087,676.10 = 48,334,435.80/x
  3. Step 3: Cross multiply
    78,725,117.40x = 118,087,676.10 × 48,334,435.80
  4. Step 4: Simplify right side
    78,725,117.40x = 5,707,701,199,226,644
  5. Step 5: Solve for x
    x = 5,707,701,199,226,644/78,725,117.40
  6. Step 6: Final answer
    x = 72,501,653.70

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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.