Home / 30,635,621.60-45,890,446.80-21,061,810.40

Finding the Fourth Proportional to 30,635,621.60, 45,890,446.80 and 21,061,810.40

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Solution

The fourth proportional to 30,635,621.60, 45,890,446.80 and 21,061,810.40 is: 31,549,413.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,635,621.60 : 45,890,446.80 = 21,061,810.40 : x
  2. Step 2: Convert to fraction form
    30,635,621.60/45,890,446.80 = 21,061,810.40/x
  3. Step 3: Cross multiply
    30,635,621.60x = 45,890,446.80 × 21,061,810.40
  4. Step 4: Simplify right side
    30,635,621.60x = 966,535,889,672,886.62
  5. Step 5: Solve for x
    x = 966,535,889,672,886.62/30,635,621.60
  6. Step 6: Final answer
    x = 31,549,413.37

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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.