Home / 78,701,208.20-118,051,812.30-40,437,456.20

Finding the Fourth Proportional to 78,701,208.20, 118,051,812.30 and 40,437,456.20

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Solution

The fourth proportional to 78,701,208.20, 118,051,812.30 and 40,437,456.20 is: 60,656,184.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,701,208.20 : 118,051,812.30 = 40,437,456.20 : x
  2. Step 2: Convert to fraction form
    78,701,208.20/118,051,812.30 = 40,437,456.20/x
  3. Step 3: Cross multiply
    78,701,208.20x = 118,051,812.30 × 40,437,456.20
  4. Step 4: Simplify right side
    78,701,208.20x = 4,773,714,989,211,871
  5. Step 5: Solve for x
    x = 4,773,714,989,211,871/78,701,208.20
  6. Step 6: Final answer
    x = 60,656,184.30

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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.