Home / 78,697,000.55-118,045,500.83-70,406,520.95

Finding the Fourth Proportional to 78,697,000.55, 118,045,500.83 and 70,406,520.95

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Solution

The fourth proportional to 78,697,000.55, 118,045,500.83 and 70,406,520.95 is: 105,609,781.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,697,000.55 : 118,045,500.83 = 70,406,520.95 : x
  2. Step 2: Convert to fraction form
    78,697,000.55/118,045,500.83 = 70,406,520.95/x
  3. Step 3: Cross multiply
    78,697,000.55x = 118,045,500.83 × 70,406,520.95
  4. Step 4: Simplify right side
    78,697,000.55x = 8,311,173,027,240,638
  5. Step 5: Solve for x
    x = 8,311,173,027,240,638/78,697,000.55
  6. Step 6: Final answer
    x = 105,609,781.43

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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.