Home / 78,178,638.69-107,841,697.90-48,758,895.05

Finding the Fourth Proportional to 78,178,638.69, 107,841,697.90 and 48,758,895.05

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Solution

The fourth proportional to 78,178,638.69, 107,841,697.90 and 48,758,895.05 is: 67,259,319.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,178,638.69 : 107,841,697.90 = 48,758,895.05 : x
  2. Step 2: Convert to fraction form
    78,178,638.69/107,841,697.90 = 48,758,895.05/x
  3. Step 3: Cross multiply
    78,178,638.69x = 107,841,697.90 × 48,758,895.05
  4. Step 4: Simplify right side
    78,178,638.69x = 5,258,242,029,258,800
  5. Step 5: Solve for x
    x = 5,258,242,029,258,800/78,178,638.69
  6. Step 6: Final answer
    x = 67,259,319.39

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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.