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Finding the Fourth Proportional to 66,865,653.60, 100,298,480.40 and 28,601,901.60

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Solution

The fourth proportional to 66,865,653.60, 100,298,480.40 and 28,601,901.60 is: 42,902,852.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,865,653.60 : 100,298,480.40 = 28,601,901.60 : x
  2. Step 2: Convert to fraction form
    66,865,653.60/100,298,480.40 = 28,601,901.60/x
  3. Step 3: Cross multiply
    66,865,653.60x = 100,298,480.40 × 28,601,901.60
  4. Step 4: Simplify right side
    66,865,653.60x = 2,868,727,267,030,329
  5. Step 5: Solve for x
    x = 2,868,727,267,030,329/66,865,653.60
  6. Step 6: Final answer
    x = 42,902,852.40

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1.5x scale

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.