Home / 66,430,103.20-99,645,154.80-40,787,965.60

Finding the Fourth Proportional to 66,430,103.20, 99,645,154.80 and 40,787,965.60

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Solution

The fourth proportional to 66,430,103.20, 99,645,154.80 and 40,787,965.60 is: 61,181,948.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,430,103.20 : 99,645,154.80 = 40,787,965.60 : x
  2. Step 2: Convert to fraction form
    66,430,103.20/99,645,154.80 = 40,787,965.60/x
  3. Step 3: Cross multiply
    66,430,103.20x = 99,645,154.80 × 40,787,965.60
  4. Step 4: Simplify right side
    66,430,103.20x = 4,064,323,146,189,075
  5. Step 5: Solve for x
    x = 4,064,323,146,189,075/66,430,103.20
  6. Step 6: Final answer
    x = 61,181,948.40

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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.