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Finding the Fourth Proportional to 28,061,895.60, 42,092,843.40 and 18,488,084.40

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Solution

The fourth proportional to 28,061,895.60, 42,092,843.40 and 18,488,084.40 is: 27,732,126.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,061,895.60 : 42,092,843.40 = 18,488,084.40 : x
  2. Step 2: Convert to fraction form
    28,061,895.60/42,092,843.40 = 18,488,084.40/x
  3. Step 3: Cross multiply
    28,061,895.60x = 42,092,843.40 × 18,488,084.40
  4. Step 4: Simplify right side
    28,061,895.60x = 778,216,041,415,182.88
  5. Step 5: Solve for x
    x = 778,216,041,415,182.88/28,061,895.60
  6. Step 6: Final answer
    x = 27,732,126.60

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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.