Home / 72,693,646.80-109,040,470.20-52,286,312.40

Finding the Fourth Proportional to 72,693,646.80, 109,040,470.20 and 52,286,312.40

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Solution

The fourth proportional to 72,693,646.80, 109,040,470.20 and 52,286,312.40 is: 78,429,468.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,693,646.80 : 109,040,470.20 = 52,286,312.40 : x
  2. Step 2: Convert to fraction form
    72,693,646.80/109,040,470.20 = 52,286,312.40/x
  3. Step 3: Cross multiply
    72,693,646.80x = 109,040,470.20 × 52,286,312.40
  4. Step 4: Simplify right side
    72,693,646.80x = 5,701,324,089,120,090
  5. Step 5: Solve for x
    x = 5,701,324,089,120,090/72,693,646.80
  6. Step 6: Final answer
    x = 78,429,468.60

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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.