Home / 66,429,017.20-99,643,525.80-55,847,436.40

Finding the Fourth Proportional to 66,429,017.20, 99,643,525.80 and 55,847,436.40

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Solution

The fourth proportional to 66,429,017.20, 99,643,525.80 and 55,847,436.40 is: 83,771,154.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,429,017.20 : 99,643,525.80 = 55,847,436.40 : x
  2. Step 2: Convert to fraction form
    66,429,017.20/99,643,525.80 = 55,847,436.40/x
  3. Step 3: Cross multiply
    66,429,017.20x = 99,643,525.80 × 55,847,436.40
  4. Step 4: Simplify right side
    66,429,017.20x = 5,564,835,469,787,259
  5. Step 5: Solve for x
    x = 5,564,835,469,787,259/66,429,017.20
  6. Step 6: Final answer
    x = 83,771,154.60

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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.