Home / 30,635,627.60-45,890,455.80-21,061,816.40

Finding the Fourth Proportional to 30,635,627.60, 45,890,455.80 and 21,061,816.40

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Solution

The fourth proportional to 30,635,627.60, 45,890,455.80 and 21,061,816.40 is: 31,549,422.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,635,627.60 : 45,890,455.80 = 21,061,816.40 : x
  2. Step 2: Convert to fraction form
    30,635,627.60/45,890,455.80 = 21,061,816.40/x
  3. Step 3: Cross multiply
    30,635,627.60x = 45,890,455.80 × 21,061,816.40
  4. Step 4: Simplify right side
    30,635,627.60x = 966,536,354,571,915
  5. Step 5: Solve for x
    x = 966,536,354,571,915/30,635,627.60
  6. Step 6: Final answer
    x = 31,549,422.37

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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.